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Chub

Chub is a common name for several species of freshwater ray-finned fish, particularly those in the family Cyprinidae and related families, found in Europe and North America.^[1] In Europe, the term commonly refers to the European chub (Squalius cephalus), a species of freshwater ray-finned fish belonging to the family Leuciscidae.^[2] It features a fusiform body with a blunt head, brassy-colored sides, dark fins, and large, dark-edged scales, typically reaching a maximum length of 60 cm standard length and a weight of up to 8 kg, though common sizes are around 30 cm total length.^[2]^[3] Native to much of Europe, the chub inhabits a wide range of freshwater environments, including slow-flowing lowland rivers, streams with riffles and pools, lakes, and canals, often preferring moderate water flows and temperatures between 4°C and 20°C.^[2] Its distribution spans the basins of the North, Baltic, Black, White, Barents, and Caspian Seas, as well as Atlantic and Mediterranean river systems from France eastward, with introductions occurring outside its native range, such as in Ireland where it is considered invasive.^[2]^[3] Juveniles form schools, while adults are often solitary or shoaling, and the species reaches sexual maturity at around 25 cm, living up to 22 years.^[2] Ecologically, the chub is an opportunistic omnivore, feeding on a diverse diet of aquatic and terrestrial invertebrates, plant material, and small fish, particularly as larger individuals become predatory.^[2] It spawns in fast-flowing gravelly areas during spring and early summer, with females laying sticky eggs multiple times over vegetation or stones.^[2] As a popular gamefish targeted by anglers, it supports minor commercial fisheries, though its flesh is considered of poor quality; the species is classified as Least Concern by the IUCN (assessed in 2022) due to its wide distribution and stable populations.^[2] In introduced areas, it can impact native biodiversity through predation and competition.^[3]

Introduction

Definition and Common Usage

A chub is a vernacular name applied to various species of ray-finned fish (class Actinopterygii) primarily within the family Leuciscidae, encompassing genera such as Squalius, Semotilus, Couesius, Erimonax, and Macrhybopsis.^[2]^[4]^[5] These fish are typically freshwater inhabitants characterized by their minnow-like forms, though the term "chub" lacks a strict taxonomic definition and reflects regional naming conventions rather than a single clade. In Europe, the term most commonly refers to the European chub (Squalius cephalus), a widespread species in rivers and streams across the continent.^[2] In North America, it is frequently used for the creek chub (Semotilus atromaculatus), abundant in eastern streams, and the lake chub (Couesius plumbeus), found in northern lakes and rivers.^[4]^[5] Other notable examples include the spotfin chub (Erimonax monachus), endemic to southeastern U.S. river systems, and the sicklefin chub (Macrhybopsis meeki), restricted to large Midwestern rivers like the Missouri.^[6]^[7] Regional contexts further highlight the term's variability; for instance, in the United Kingdom, the European chub is a favored species among anglers due to its size and fighting qualities in coarse fishing.^[8] These usages underscore the chub's role as a common, adaptable fish group across temperate freshwater ecosystems, with all mentioned species classified under the order Cypriniformes.^[2]

Etymology

The term "chub" entered the English language in the mid-15th century as "chubbe," referring to a type of river fish characterized by its short, thick body.^[9] Its etymological origin remains unknown, though it likely derives from an earlier descriptive term for plump or stocky forms, reflecting the fish's morphology.^[9] This early usage appears in late Middle English texts.^[10] Over time, the word evolved beyond its initial European context, with the term applied to morphologically similar fish in North America.^[1] This adaptation extended the term to native North American species in the family Leuciscidae, like the creek chub (Semotilus atromaculatus), broadening its scope while retaining the emphasis on robust, cylindrical body shapes.^[1] The term has also led to misapplications in other contexts, such as "chub mackerel" (Scomber japonicus), a pelagic species in the family Scombridae that shares no taxonomic relation to true chubs but was named for its somewhat stocky appearance relative to other mackerels. This highlights how the descriptive root of "chub" has occasionally been extended to unrelated marine fish, diverging from its freshwater origins.^[11]

Taxonomy and Classification

Chubs in Cyprinidae

Chubs within the Cyprinidae family, commonly known as the carp or minnow family, primarily belong to the subfamily Leuciscinae, encompassing a diverse group of small to medium-sized freshwater fishes characterized by their streamlined bodies and adaptability to riverine environments.^[12] This subfamily includes numerous genera referred to as chubs, reflecting their plump, cylindrical form, and represents one of the largest radiations within Cyprinidae, with approximately 300 species across Eurasia and North America.^[13] Key genera include Squalius for European species, Semotilus and Couesius for North American creek and lake chubs, and Macrhybopsis for various specialized North American river chubs.^[14]^[15] Additionally, genera like Erimonax and Gila contribute to the North American chub diversity, though recent genetic analyses have prompted reevaluations of their boundaries.^[16]^[17] Notable species exemplify the distribution and ecological roles of these chubs. The European chub (Squalius cephalus) is widespread across temperate European rivers, serving as a key component of lotic ecosystems. In eastern North America, the creek chub (Semotilus atromaculatus) inhabits headwater streams, often tolerating cooler waters. The lake chub (Couesius plumbeus) extends across northern North America and into Asia, favoring gravelly lake margins and streams. Specialized riverine species include the spotfin chub (Erimonax monachus), endemic to the Tennessee River system; the sicklefin chub (Macrhybopsis meeki), adapted to the sandy runs of the Missouri River; and the peppered chub (Macrhybopsis tetranema), found in the Arkansas River drainage.^[16] These species highlight the family's morphological and distributional variability within Leuciscinae. Cyprinidae stands as one of the most speciose families of freshwater fishes. Fossil records from Miocene deposits in western North America document early chub-like forms, underscoring their long-term persistence in dynamic fluvial habitats.^[18] As of 2025, taxonomic updates driven by genetic studies have refined chub classifications within Cyprinidae. For instance, phylogenetic analyses of the genus Gila have revealed that the Gila chub (Gila intermedia) lacks distinct genetic boundaries from the roundtail chub (Gila robusta), leading to proposals that it be considered a junior synonym or ecotype rather than a full species, prompting the U.S. Fish and Wildlife Service to recommend delisting it from endangered status due to taxonomic invalidity.^[19]^[17] Such revisions, based on multi-locus sequencing, emphasize the role of hybridization and gene flow in shaping chub diversity.^[20]

Chubs in Other Families

Outside the Cyprinidae family, the term "chub" most prominently refers to members of the Kyphosidae family, commonly known as sea chubs, which are marine perciform fishes distinct in their herbivorous diet and tropical to subtropical distribution.^[21] The Kyphosidae comprises 2 genera and 16 species, primarily in the genus Kyphosus, characterized by an oval, compressed body, small terminal mouth, and strong caudal fin adapted for near-shore reef habitats.^[21] These fish differ taxonomically from Cyprinidae chubs, which are predominantly freshwater and often omnivorous or insectivorous, by belonging to the order Perciformes, reflecting evolutionary adaptations to marine algae-based feeding.^[22] Prominent species in the Kyphosidae include Kyphosus bigibbus, the Bermuda chub, endemic to the western Atlantic where it inhabits rocky reefs and feeds on benthic algae.^[23] In the same region, Kyphosus sectatrix, known as the gray sea chub, exhibits a similar morphology but with a more extensive range from the Caribbean to the Gulf of Mexico, often forming schools around coral structures.^[24] Indo-Pacific representatives, such as Kyphosus vaigiensis (brassy chub), are widespread from the Red Sea to the Pacific, distinguished by yellowish hues and a preference for surf-swept outer reefs.^[25] Endemic examples highlight regional diversity within Kyphosidae; for instance, Kyphosus hawaiiensis, the Hawaiian chub, is restricted to the Hawaiian Islands, featuring a bicolored body pattern and occurring in aggregations on exposed reefs.^[26] Phylogenetic studies indicate ongoing revisions in Kyphosidae taxonomy, with molecular analyses supporting the monophyly of the family but revealing cryptic species complexes in genera like Kyphosus.^[27] While occasional vernacular use of "chub" appears for unrelated families like Gobiidae in Pacific contexts, such applications lack formal taxonomic endorsement and are not widely recognized in ichthyological literature.^[22]

Physical Characteristics

Morphology

Chubs, primarily referring to various species within the family Cyprinidae, possess a characteristic body plan that is elongated and cylindrical to fusiform, facilitating streamlined movement in aquatic environments. This structure features a rounded snout and a small, terminal mouth adapted for feeding on invertebrates and plant matter. Their scales are cycloid, smooth-edged, and cover the body uniformly, contributing to hydrodynamic efficiency. The lateral line is complete, extending from the operculum to the caudal fin base, and is highly sensitive to water currents and vibrations, aiding in navigation and predator avoidance.^[28]^[29]^[30] The fin configuration in chubs supports agile swimming and stability. The dorsal fin, positioned midway along the body, typically has 3 unbranched rays and 7-10 branched soft rays, while the anal fin has 3 unbranched rays and 7-12 branched soft rays. Pectoral fins are low-set and broad, aiding in maneuvering, and the caudal fin is forked for propulsion. Cyprinids lack an adipose fin, distinguishing them from related orders. Pharyngeal teeth, located on the fifth gill arch, are arranged in one to two rows, enabling efficient grinding of food in the absence of oral teeth.^[28]^[29]^[31] Sensory adaptations in chubs include barbels that are absent in many species but present as small structures in others, such as the creek chub, relying instead on the well-developed lateral line system for detecting environmental cues. A swim bladder provides buoyancy control, essential for maintaining position in freshwater habitats without constant swimming. Sexual dimorphism is evident during the breeding season, particularly in species like the European chub (Squalius cephalus), where males exhibit brighter coloration and develop keratinized tubercles on the head and body to attract females and establish dominance.^[28]^[29]^[32]

Size, Coloration, and Variations

Chubs exhibit a wide range of sizes depending on species and habitat, with the European chub (Squalius cephalus) reaching a maximum standard length of 60 cm and weight of 8 kg.^[2] The creek chub (Semotilus atromaculatus) typically measures 15–30 cm in total length, with a maximum of 30.3 cm.^[29] Among marine species, sea chubs in the genus Kyphosus, such as K. sectatrix, can attain lengths up to 76 cm.^[33] Coloration in chubs varies by species and life stage, often providing camouflage in their respective environments. The European chub displays an olive-green to silvery body with dark-edged scales forming a reticulate pattern, and breeding males develop orange to red anal and pelvic fins.^[2] Creek chubs have a gray-brown dorsum with an olive-silver side accented by a dusky black stripe, while breeding males show orange lower fins, blue on the head sides, and pink on the lower body and head.^[29] Sea chubs are generally gray to brownish, with dull yellowish longitudinal stripes on the body and lighter undersides; juveniles may exhibit pale spots on the head, body, and fins.^[33] Intraspecific variations occur across chub species, influenced by age, sex, and geography. The spotfin chub (Erimonax monachus) features a distinctive black blotch on the rear half of the dorsal fin, prominent in both juveniles and adults, alongside tan- to olive-colored backs and silvery sides in non-breeding individuals.^[34]^[6] Creek chubs show regional differences, with eastern populations often displaying darker olive tones compared to lighter gray-brown hues in western ones, though no formal subspecies are currently recognized. Growth rates in chubs are rapid during the first year, particularly in warmer waters, enabling quick maturation. For instance, lake chubs (Couesius plumbeus) commonly reach about 10.5 cm by their first or second year, with overall growth influenced by water temperature and food availability.^[35]

Habitat and Distribution

Freshwater Environments

Freshwater chubs, primarily species within the family Cyprinidae, inhabit temperate rivers, streams, and lakes featuring moderate flow rates, gravel or sand bottoms, and clear water conditions. These environments provide suitable substrates for feeding and spawning, with chubs often occupying riffles, pools, and margins where water velocity supports their benthic or benthopelagic lifestyles.^[2]^[36] For instance, the European chub (Squalius cephalus) thrives in slow-flowing lowland rivers and the shores of large lakes, occasionally venturing into small mountain streams, while the creek chub (Semotilus atromaculatus) prefers clear, cool headwater streams with alternating riffles and pools over gravel substrates.^[2]^[36] The global distribution of freshwater chubs spans the Holarctic region, encompassing diverse basins across continents. In Europe, species like the European chub range from the Rhine River drainage in the west to the Volga River in the east, extending north to Scandinavia and south to the Mediterranean basin.^[2] North American distributions include widespread occurrence from the Great Lakes eastward to the Atlantic and Mississippi River basins, with the creek chub present from southern Canada to the Gulf of Mexico and as far west as the Rocky Mountains.^[4]^[36] In Asia, chub-like species such as the Siberian dace (Leuciscus baicalensis) occupy rivers and lakes from the Ob to the Kolyma River drainages in Siberia.^[37] Certain species exhibit restricted ranges, such as the spotfin chub (Erimonax monachus), which is endemic to the Tennessee River drainage in the southeastern United States, including tributaries in Tennessee, North Carolina, and Virginia.^[6] These fish demonstrate environmental tolerances suited to temperate freshwater systems, enduring cool to warm water temperatures typically between 10°C and 25°C and pH levels from 6.5 to 8.0, though they avoid stagnant, silty, or polluted habitats that degrade water quality and substrate integrity.^[2]^[38]^[36] The lake chub (Couesius plumbeus), for example, inhabits gravelly streams and rocky lake margins across northern North America, favoring clear, oxygenated waters while shifting to deeper areas during periods of high temperatures.^[38] Migration patterns vary among fluvial species, with some undertaking seasonal movements to spawning grounds. The sicklefin chub (Macrhybopsis meeki), a large-river specialist, migrates within the main channels of the Missouri and lower Yellowstone Rivers during reproductive periods, favoring strong currents over sand or fine gravel for spawning in spring.^[39]^[40]

Marine and Brackish Environments

Marine and brackish chubs, primarily from the family Kyphosidae, inhabit a variety of coastal and nearshore environments in tropical and subtropical regions, where they are commonly associated with coral reefs, rocky shores, and seagrass beds.^[21] Species such as those in the genus Kyphosus frequent algal-covered rocky substrates and surf-swept reef flats, often forming schools in lagoons and along seaward edges. These habitats provide ample structure for shelter and foraging, with juveniles sometimes utilizing floating Sargassum rafts in open waters.^[41] The distribution of marine chubs spans circumtropical waters across the Atlantic, Indian, and Pacific Oceans. In the Indo-Pacific, Kyphosus vaigiensis ranges from the Red Sea eastward to Hawaii and the Line Islands, occupying inshore reef systems and occasionally venturing into transitional zones. In the Atlantic, Kyphosus sectatrix is prevalent in the Caribbean Sea, Gulf of Mexico, and around Bermuda, favoring similar reef-associated environments.^[41] Many species exhibit tolerance for brackish conditions, entering estuaries and mangrove-adjacent areas during movements along coastal habitats.^[42] These chubs prefer warm oceanic waters with temperatures typically between 24.7°C and 29°C, and salinities of 25–35 ppt, though some adapt to lower salinities in brackish settings.^[43] They are generally found at depths of 1–30 m, often near kelp beds or mangrove fringes in exposed coastal areas, which support their ecological roles in reef dynamics. An example of an endemic marine chub is the Hawaiian chub (Kyphosus hawaiiensis), restricted to the waters surrounding the Hawaiian Islands, where it inhabits shallow surge zones near coral and rocky reefs in lagoons and coastal areas.^[26] This species faces threats from habitat loss due to coral reef degradation, exacerbated by climate change and coastal development in these isolated island ecosystems.^[44]

Ecology and Behavior

Diet and Feeding

Freshwater chubs in the family Cyprinidae exhibit omnivorous or insectivorous diets, varying by species, age, and habitat availability. The European chub (Squalius cephalus) consumes a wide range of aquatic and terrestrial animals, including insects, crustaceans, molluscs, and plant material, with larger adults shifting to a predominantly piscivorous diet targeting small fish such as minnows and eels.^[2] Juveniles feed on a variety of algae, detritus, small invertebrates, and other items, reflecting their position in shallow shoreline habitats where such food sources are abundant.^[2] Similarly, the creek chub (Semotilus atromaculatus) is a generalized carnivore that opportunistically feeds on insect larvae, including surface-dwelling flies, as well as crayfish, worms, snails, and small fish, with juveniles focusing on smaller aquatic invertebrates.^[29]^[45] In contrast, marine chubs of the family Kyphosidae, such as species in the genus Kyphosus, are primarily herbivorous, grazing on macroalgae like Sargassum and other brown, red, and green seaweeds, as well as seagrass in shallow reef environments.^[46] They employ specialized feeding mechanisms, using fused, incisor-like teeth in their jaws—resembling bony plates—to scrape and crop algae from substrates, occasionally supplementing their diet with sponges or small invertebrates when algal availability fluctuates seasonally.^[46]^[47] Cyprinid chubs typically employ suction feeding, expanding the buccal cavity to draw in prey while often incorporating a ram component through forward swimming to approach food items, enabling continuous foraging in flowing waters.^[48] Most species display diurnal feeding patterns, with peak activity during daylight hours when visibility aids in locating prey, though juveniles of some, like creek chubs, show heightened surface feeding on emerging insects at dawn and dusk.^[49] These fish serve as mid-level consumers in aquatic food webs; for instance, the sicklefin chub (Macrhybopsis meeki) feeds primarily on drifting aquatic insect larvae such as midge pupae, linking primary producers to higher predators.^[50] Prey availability is influenced by habitat structure, such as riffles providing insect drift in freshwater systems.^[2] Juveniles of many chub species form schools in shallow, protected areas for safety and foraging efficiency, while adults are often solitary or form loose shoals, exhibiting territorial behavior during spawning seasons.^[2]^[29]

Reproduction and Life Cycle

Chub species exhibit diverse reproductive strategies adapted to their freshwater or marine habitats, with spawning typically synchronized to seasonal environmental cues such as rising water temperatures in spring and summer. In freshwater Cyprinidae chubs, such as the European chub (Squalius cephalus), spawning occurs from May to August when water temperatures exceed 14°C, often in multiple batches over shallow, gravelly riffles where adhesive eggs are deposited.^[51] These pale yellow, sticky eggs, measuring about 1.8 mm in diameter, adhere to substrates like stones and vegetation, with females producing 5,000 to 65,000 eggs per spawning season depending on body size and age.^[52]^[53] Similarly, the creek chub (Semotilus atromaculatus) spawns in late spring to midsummer, depositing eggs in gravel nests excavated by males, though in lower numbers of around 1,000 to 2,000 per female.^[54] Marine chubs in the family Kyphosidae, such as the Bermuda chub (Kyphosus sectatrix), employ broadcast spawning in reef environments, releasing pelagic eggs directly into the water column during seasonal aggregations, often peaking with lunar cycles.^[55] These eggs are non-adhesive and drift freely, making marine reproduction less studied but similarly tied to warmer months with environmental triggers like tidal flows.^[56] During breeding, male freshwater chubs may display intensified coloration and tubercles, signaling readiness to females. Following spawning, chub life stages progress from egg to adulthood with distinct developmental phases. Hatched larvae are initially planktonic, drifting in the water column for dispersal before settling; in freshwater species like S. cephalus, first-day larvae measure 6–7 mm and develop rapidly over 6–10 days at 18°C.^[54] Juveniles then form schools in shallow, protected areas, growing quickly while foraging on small invertebrates and algae. Sexual maturity is reached at 2–4 years, with creek chubs often maturing around 10 cm in length, while European chubs mature later at 3–5 years.^[54]^[57] Most Cyprinidae chubs have a lifespan of 5–10 years, influenced by habitat quality and predation, though larger species like S. cephalus can live up to 22 years in optimal conditions.^[51]^[2] Marine Kyphosidae chubs exhibit comparable longevity, with growth patterns supporting multiple reproductive cycles over their lives.^[58]

Human Interactions

Fishing and Angling

Chubs, particularly the European chub (Squalius cephalus), are a popular target for recreational anglers in the United Kingdom and continental Europe, where they are often caught using light tackle in rivers and streams. Anglers commonly employ baits such as worms, maggots, cheese paste, or bread, with techniques like trotting a float-fished bait downstream proving effective for targeting shoals in moderate flows.^[59]^[60] In the UK, chub fishing is a staple of coarse angling, with venues like the River Trent offering opportunities for specimens exceeding 5 pounds using freelined slugs or surface baits during summer.^[61] In North America, creek chub (Semotilus atromaculatus) serve primarily as baitfish but are also targeted by anglers, especially youth and fly fishers in small streams. Fly-fishing with patterns mimicking insects or small minnows, such as the Murray's Magnum Creek Chub streamer, is a favored method in deeper pools and undercut banks, often using ultralight rods.^[62]^[63] They can be easily captured with small hooks baited with red worms or dough balls in shaded areas.^[64] Commercially, freshwater chubs like the European chub undergo minor harvests in parts of Europe for use as bait or local food markets, though their flesh is generally considered of lower quality.^[51]^[28] In the Pacific, sea chubs of the family Kyphosidae, such as the Cortez sea chub (Kyphosus elegans), support small-scale artisanal fisheries using hooks, lines, gill nets, or spears, primarily for local consumption in regions like the Gulf of California.^[65]^[66] Fishing regulations for chubs vary by region; in U.S. states, creek chubs as nongame baitfish often face daily limits of 25 individuals when collected from streams, with no specific possession caps for angling in many areas.^[67] In the UK, chub angling adheres to general coarse fishing rules, including catch-and-release practices on many club waters.^[68] Culturally, the European chub holds symbolic status in British angling literature, notably featured in Izaak Walton's 1653 The Compleat Angler, where it is described as a challenging quarry requiring skillful bait presentation and cooking to mitigate its bony texture.^[69] Additionally, chubs serve as indicator species in stream health assessments across Europe and North America, with their presence and condition reflecting water quality and habitat integrity in lotic environments.^[70]

Conservation and Threats

Several species of chub face significant conservation challenges due to their specialized habitat requirements in rivers and streams. The spotfin chub (Erimonax monachus) has been federally listed as threatened under the U.S. Endangered Species Act since 1977, primarily owing to habitat degradation and destruction in Tennessee River tributaries, including sedimentation and impoundments that fragment riffle habitats essential for spawning.^[6]^[71] Similarly, the sicklefin chub (Macrhybopsis meeki) is considered threatened in the Missouri River basin, where mainstream dams have altered flow regimes, reduced turbidity, and flooded historical habitats, leading to population declines and restricted distribution.^[40]^[72] In June 2025, the U.S. Fish and Wildlife Service proposed delisting the Gila chub (Gila intermedia) from the Endangered Species Act, determining that it is not a valid taxonomic entity distinct from the roundtail chub (Gila robusta), based on genetic and morphological analyses. This proposal would remove protections for approximately 160 stream miles of critical habitat. However, the proposal has been criticized by groups such as the Center for Biological Diversity, who argue it ignores ongoing threats and would eliminate vital protections for the fish's habitat.^[19] Other Macrhybopsis species, such as the silver chub (M. storeriana), continue to require ongoing monitoring in the Great Lakes and Mississippi River basins, with interagency trawl surveys tracking abundance amid persistent habitat pressures.^[73]^[74] Primary threats to chub populations include habitat fragmentation from dams and channelization, which disrupt migration and spawning by creating barriers and altering natural flow patterns, as seen in the decline of peppered chub (Macrhybopsis tetranema) in the Arkansas River basin.^[75] Pollution from agricultural runoff and urbanization further degrades water quality, reducing oxygen levels and increasing sediment loads that smother riffles critical for chub reproduction.^[76] Invasive species exacerbate these issues; for instance, the round goby (Neogobius melanostomus) competes with lake chub (Couesius plumbeus) for food and habitat in the Great Lakes region, contributing to native declines.^[76] Climate change compounds these threats by altering water flows through increased precipitation variability and warmer temperatures, which can flood nests or shift thermal regimes, as projected for river chub (Nocomis micropogon) in eastern U.S. streams.^[77] Conservation efforts focus on recovery planning and habitat restoration to mitigate these risks. The U.S. Fish and Wildlife Service released a draft recovery plan for the peppered chub in August 2025, outlining strategies to support self-sustaining populations in the Arkansas River basin through invasive species control, water management improvements, and reintroduction to restored segments, with an estimated cost of $73 million over several decades.^[78]^[79] For European chub (Squalius cephalus), protections arise indirectly through the EU Habitats Directive, which safeguards riverine habitats across member states to maintain biodiversity, including monitoring for pollution and fragmentation in lowland rivers.^[51] Ongoing monitoring of Macrhybopsis species integrates genetic studies and population surveys to inform adaptive management, ensuring resilience against cumulative threats.^[80]

References

[1]
Squalius cephalus, Chub : fisheries, gamefish - FishBase
Most abundant in small rivers and large streams of barbel zone with riffles and pools. Found along shores of slow-flowing lowland rivers, even in very small ...
[2]
Chub (Squalius cephalus) - Inland Fisheries Ireland
Chub have a sturdy body, with brassy coloured sides, dark fins, a blunt head and a large mouth. Their scales are distinctively large and dark-edged.
[3]
Creek Chub (Semotilus atromaculatus) - Species Profile
Native Range: Most of eastern United States and southeastern Canada in Atlantic, Great Lakes, Hudson Bay, Mississippi, and Gulf basins as far west as ...
[4]
Couesius plumbeus, Lake chub : fisheries, aquarium, bait - FishBase
Body moderately compressed and slender, coloration include brown to green above, dark stripe along silver gray side, darkest on young and large male, sometimes ...Missing: definition | Show results with:definition
[5]
Spotfin Chub (Erimonax monachus) | U.S. Fish & Wildlife Service
Spotfin chub is a small, slender fish, that grows up to four inches in length. Juveniles, females, and non-breeding males have tan-, gray-, or olive-colored ...
[6]
Sicklefin Chub (Macrhybopsis meeki) - Species Profile
Common name: Sicklefin Chub · Size: 11 cm. · Native Range: The native range of the Sicklefin Chub includes the Missouri River, from Montana to the mouth. · Ecology ...Missing: definition genera Squalius Semotilus
[7]
Chub | Fish species - Canal & River Trust
Feb 24, 2025 · Scientific name, Leuciscus cephalus. Family, Cyprinidae (Carp). Diet, Caddis and mayfly and their larvae, small fish and fish eggs, worms and ...Missing: vernacular | Show results with:vernacular
[8]
Chub - Etymology, Origin & Meaning
"Chub," mid-15c., origin unknown, means a European carp or U.S. black bass fish; also denotes a lazy or plump person since the 1550s.
[9]
CHUB Definition & Meaning - Merriam-Webster
Etymology. Middle English chubbe. First Known Use. 15th century, in the meaning defined at sense 1. Time Traveler. The first known use of chub was in the 15th ...
[10]
Chub | Freshwater, Cyprinidae, Spawning - Britannica
Oct 28, 2025 · Chub, any of several freshwater fishes of the carp family, Cyprinidae, common in Europe and North America. Chubs are good bait fish.
[11]
CHUB MACKEREL Definition & Meaning - Dictionary.com
Chub mackerel definition: a small mackerel, Scomber japonicus, of Atlantic and Pacific seas and parts of the Indian Ocean.. See examples of CHUB MACKEREL ...Missing: etymology | Show results with:etymology
[12]
https://www.fishbase.se/summary/FamilySummary.php?ID=122
[13]
Phylogenetic relationships and classification of the Holarctic family ...
A total of 358 species from 82 genera of Leuciscidae were analyzed (see Appendix). Herein, we refer to groups of Leuciscidae analyzed as: Nearctic ...
[14]
Species in Squalius - Fish Identification
Fish Identification: Find Species. Class: Teleostei. Order: Cypriniformes. Family: Leuciscidae Minnows. Subfamily: Leuciscinae. Genus: Squalius.<|control11|><|separator|>
[15]
Fish Identification: Find Species - FishBase
Semotilus atromaculatus, Creek chub, North America, 30.3 TL, 1818 ; Semotilus corporalis, Fallfish, North America, 51 TL, 1817.
[16]
https://www.fishbase.se/summary/Erimonax-monachus.html
[17]
Geographic destiny trumps taxonomy in the Roundtail Chub, Gila ...
Sep 22, 2023 · Geographic destiny trumps taxonomy in the Roundtail Chub, Gila robusta species complex (Teleostei, Leuciscidae)
[18]
Phylogeny and Biogeography of the Family Cyprinidae in the Middle ...
The phylogenetic relationships of cyprinid species from the Middle East and neighboring biogeographical areas were investigated using cytochrome b sequence ...
[19]
[PDF] a new chub (actinopterygii, cypriniformes, cyprinidae) from the middle
This is the oldest recognized species of Lavinia and the first new chub species to be documented from the Miocene of Nevada in over 30 years. Measurements of ...
[20]
Endangered and Threatened Wildlife and Plants; Removal of Gila ...
Jun 17, 2025 · Our review indicates that, based on the best scientific and commercial data available, the Gila chub is not a valid taxonomic entity and does ...
[21]
Phylogenetic relationships of North American western chubs of the ...
Phylogenetic relationships of North American western chubs of the genus Gila (Cyprinidae, Teleostei), with emphasis on southern species · Highlights · Abstract.
[22]
https://aiep.pensoft.net/article/64069/
[23]
World-wide species distributions in the family Kyphosidae (Teleostei
Sea chubs of the family Kyphosidae are major consumers of macroalgae on both temperate and tropical reefs, where they can comprise a significant proportion ...
[24]
A new record of the brassy chub, Kyphosus vaigiensis (Actinopterygii
Jul 12, 2021 · A new record of the brassy chub, Kyphosus vaigiensis (Actinopterygii: Perciformes: Kyphosidae), from the Mediterranean Sea.
[25]
https://www.fishbase.se/summary/speciessummary.php?id=1708
[26]
https://www.fishbase.se/summary/speciessummary.php?id=62423
[27]
https://www.sciencedirect.com/science/article/abs/pii/S105579031630080X
[28]
Kyphosus hawaiiensis, Hawaiian chub - FishBase
This species is distinguished by the following characters: body oval, deep and well compressed; mouth terminal, slightly oblique ventrally and the anterior tip ...
[29]
Squalius cephalus summary page
### Summary of Squalius cephalus Morphology
[30]
Semotilus atromaculatus, Creek chub - FishBase
Inhabits rocky and sandy pools of headwaters, creeks and small rivers (Ref. 5723, 86798). Mostly found in tiny, intermittent streams. Young feed on small ...
[31]
Cyprinus - an overview | ScienceDirect Topics
Usually they possess a single dorsal fin. Ordinarily the bodies are covered with smooth cycloid scales, though occasionally they may be naked. The biology of ...Missing: general anatomy plan
[32]
Evolutionary Trends of the Pharyngeal Dentition in Cypriniformes ...
Jun 24, 2010 · Cypriniformes are characterized by a striking distribution of their dentition: namely the absence of oral teeth and presence of pharyngeal teeth ...
[33]
[PDF] Relationships of epidermal morphology and breeding behaviors in ...
The location and structure of keratinized regions in the epidermis of these cyprinid fishes is species-specific. The distribution of keratin and the for.m in ...<|control11|><|separator|>
[34]
[PDF] KYPHOSIDAE
Size: Maximum: 76 cm; world game record 6.01 kg. Habitat, biology, and fisheries: Inhabits shal- low waters over turtle grass, sand, or rocky bot- tom and ...
[35]
Erimonax monacha - NCFishes.com
Erimonax monachus. Unique Characters: Slender, arched body, flattened below. Long snout overhangs mouth. Small barbel at corner of mouth.<|separator|>
[36]
Couesius plumbeus summary page
### Growth Information for Lake Chub (Couesius plumbeus)
[37]
[PDF] HABITAT SUITABILITY INDEX MODELS: CREEK CHUB
Feb 4, 1982 · The creek chub is a widely-distributed cyprinid ranging from the Rocky. Mountains to the Atlantic Coast and from the Gulf of Mexico to southern.<|control11|><|separator|>
[38]
Leuciscus baicalensis, Siberian dace - FishBase
Inhabits rivers and lakes where it forms small shoals above sandy and stony bottom. Feeds on insect larvae such as caddis flies and mayflies, ...Missing: chub | Show results with:chub
[39]
Couesius plumbeus summary page
### Habitat and Distribution of Lake Chub (Couesius plumbeus)
[40]
Reproductive development in the sicklefin chub in the Missouri and ...
We describe aspects of sicklefin chub (Macrhybopsis meeki) reproductive development from three study areas encompassing greater than 2700 km of the Missouri ...
[41]
Sicklefin Chub - Montana Field Guide
Mar 7, 2024 · The Sicklefin Chub is a rare, large-river minnow species found in the lower Missouri and Yellowstone Rivers (Large Valley River Ecosystems) of Montana.
[42]
https://www.researchgate.net/publication/261596005_Brassy_chubs_Kyphosus_vaigiensis_display_unexpected_trans-island_movement_along_inshore_habitats
[43]
Bermuda sea chub - Kyphosus sectatrix summary page - FishBase
Inhabits shallow waters, over turtle grass, sand or rocky bottom and around coral reefs (Ref. 3725). Young commonly found among floating Sargassum seaweeds.
[44]
Brassy chubs Kyphosus vaigiensis display unexpected trans-island ...
Aug 9, 2025 · Of particular interest, two individuals displayed unexpected trans-island move-ment throughout estuarine and coastal habitats, which ...Missing: brackish | Show results with:brackish
[45]
Kyphosus vaigiensis, Brassy chub : fisheries, gamefish - FishBase
Colour of body silvery with a bluish shine, with golden horizontal lines along the body (around 23-29), dorsal lines above lateral line curved along the lateral ...
[46]
[PDF] 2022 ecosystem status report for hawai'i
previous efforts and describes the status and trends of marine ecosystems across the main Hawaiian. Islands. ... habitat destruction, land-based pollution, and ...
[47]
Squalius cephalus (European chub) | CABI Compendium
The chub (S. cephalus) is a freshwater fish species (Cyprinidae family) that inhabits slow and moderate water flows from a wide range of European waters. It has ...
[48]
Creek Chub | Mass.gov
Apr 15, 2025 · Breeding males darken dorsally and have a yellow to rosy coloration along the body, orange fins, and blue along the side of the head.Missing: regional | Show results with:regional
[49]
Kyphosus incisor summary page
### Summary of Diet and Feeding for Kyphosus incisor (Yellow Sea Chub)
[50]
Seasonal changes in dietary composition of the herbivorous fish ...
Aug 7, 2025 · Its diet consists primarily of brown algae, and diet composition is largely determined by the availability of algae in the surrounding habitat ( ...
[51]
A mechanical perspective on suction feeding in fishes - PMC
Sep 30, 2025 · Suction flows accelerate food towards the mouth, while the displacement of water by the fish's forward motion (i.e. the 'bow wave') will push ...
[52]
Semotilus atromaculatus - Creek chub - Animal Diversity Web
Oct 6, 2014 · If non-cyprinid fish and crayfish are abundant in the environment, then creek chubs avoid cyprinid species.
[53]
[PDF] Sicklefin chub life history (Macrhybopsis meeki) - MyFWP
It has a better-developed sense of sight than sturgeon and sicklefin chubs and uses this ability to help locate food, which is typically zooplankton and.
[54]
(PDF) Growth and Reproduction of Chub (Squalius cephalus) in ...
Aug 7, 2025 · The sexual maturity age of females and males was determined to be II age group and first sexual maturity. The total length was found as 11.33 cm ...Missing: tubercles | Show results with:tubercles
[55]
Observations on the age, growth, reproduction and food of the chub ...
Spawning occurred from late May into June and elaboration of the gonads took place between September and May. Immature chub had an annual cycle of condition; ...
[56]
Semotilus atromaculatus - NatureServe Explorer
See Johnson and Ramsey (1990) for discussion of variation and subspecies. ... Ecology of the creek chub, Semotilus atromaculatus (Mitchill), in northern waters.Missing: regional | Show results with:regional
[57]
Temporal patterns and behavioral characteristics of aggregation ...
Aug 10, 2025 · Temporal patterns and behavioral characteristics of aggregation formation and spawning in the Bermuda chub (Kyphosus sectatrix) ... spawn pelagic ...
[58]
Percoidei IV (Goatfishes, Butterflyfishes, Angelfishes, Chubs, and ...
Most of these fishes appear to spawn pelagically, the eggs are fertilized in the water column during pair spawning, and there is no parental care. Sneaking ( ...
[59]
Squalius cephalus - Wikipedia
Squalius cephalus, the common chub, European chub or simply chub, is a species of freshwater ray-finned fish belonging to the family Leuciscidae, the daces, ...
[60]
Chub - Species Profile - National Biodiversity Data Centre
Reproduction. Males sexually mature 3-4 and females at 4-5 years of age (Welby, 2004), spawning in shallow riffles over gravel or stoney substrates, to which ...
[61]
[PDF] Creek Chub (Semotilus atromaculatus)
Nests may be closely spaced. Size and Growth. Adults typically 80-200 mm up to a maximum 300 mm. Maximum longevity is 5-7 ...
[62]
Brassy Chub Culture - Frank Baensch
May 15, 2018 · Sea chubs or ruddefishes (Kyphosidae) are primarily tropical, schooling, herbivorous, coastal reef fishes comprising 4 genera and 11 species.
[63]
Fishing for Chub - Fisheries.co.uk
Sep 12, 2023 · Learn to catch one of Britain's favourite native river fish, the Chub - Read our guide on tackle, tactics and venues by Chris Smith.
[64]
All You Need To Know When Fishing For Chub | Angling Direct
Jan 5, 2023 · 1. Picking a well-covered location 2. Try the Trotting method 3. Fish off the top (surface fishing) 4. Pick strong tackle 5. Targeting chub an ...
[65]
10 Great Chub Fishing Tips | Angling Times
Aug 19, 2023 · Experiment with bait colour · Stinky baits in coloured water · Use short hairs · Moving baits · Return fish away from your swim · Freeline a slug.
[66]
Creek Chub - CT.gov
Size. Commonly 2 to 6 inches. State survey max. size 8.3 inches. Max. reported size 12 inches. Distribution. Widely distributed and common over much ...
[67]
Murray's Magnum Creek Chub - The View From Harry's Window
Jan 21, 2016 · A very effective technique is to fish the Murray's Magnum Creek Chub Streamer size 4 across stream below the riffles, in the deep pools and in the tails of the ...
[68]
Fish Iowa - Fish Species - Creek Chub - Forms & Applications
Creek Chubs provide some angling in small streams, particularly for young fishermen, and are an excellent food-fish. They are one of the main baitfish because ...
[69]
Kyphosus elegans, Cortez sea chub : fisheries, gamefish - FishBase
Size / Weight / Age. Maturity: Lm ? range ? - ? cm. Max length : 53.0 cm TL male/unsexed; (Ref. 55763); common length : 25.0 cm TL male/unsexed; (Ref. 55763) ...
[70]
Sea Chub Family Photographs, and Information – Kyphosidae
The fish of the Sea Chub or Kyphosidae Family The family has fifty-six global members that have been placed into fifteen genera. They are found circumglobally.Missing: taxonomy | Show results with:taxonomy
[71]
Statewide Daily & Size Limits | Oklahoma Department of Wildlife ...
It is unlawful to take or possess more than 25 nongame bait fish in rivers or streams, except for shad, of which 200 may be taken or possessed. (1) Alabama ...
[72]
Fishbook: Chub - Angling Trust
Aug 21, 2019 · We profile the UK's most common as well as some lesser-known fish species to help newcomer anglers find out more about fish that can be caught ...
[73]
The Complete Angler;, by Isaak Walton. - Project Gutenberg
And first I will tel you how you shall catch such a Chub as this was; & then how to cook him as this was: I could not have begun to teach you to catch any fish ...
[74]
Fish health in the Nidda as an indicator for ecosystem integrity
Jan 18, 2022 · To investigate potential chronic effects, three different species of feral fish, brown trout (Salmo trutta f. fario), European chub ...
[75]
Species Profile for Spotfin Chub(Erimonax monachus) - ECOS
Spotfin chubs spawn May through August based on water temperature and length of day. Females deposit eggs in crevices between rocks. Some individuals may spawn ...
[76]
Sicklefin Chub | Montana Chapter
The sicklefin chub (Macrhybopsis meeki), is presently listed as a species of special concern, class B, by the State of Montana (Hunter 1994). Despite a ...
[77]
Silver Chub (Macrhybopsis storeriana), Great Lakes - Canada.ca
Aug 5, 2025 · Although there is no species-specific monitoring program for Silver Chub in Ontario, the Interagency Index Trawl conducted by the OMNR and ...
[78]
[PDF] Sicklefin Chub(Macrhybopsis meeki) Conservation Status Rank ...
Mar 7, 2024 · Trawling data above Fort Peck shows stable population, no trend data on Yellowstone River, most catches are low numbers (FishMT data).
[79]
Endangered Species Status for Peppered Chub and Designation of ...
Feb 28, 2022 · Although habitat degradation and fragmentation are the primary stressors to the peppered chub, we present a broader discussion of the threats to ...
[80]
[PDF] Lake Chub (Couesius plumbeus)
May 4, 2006 · The lake chub is in the bony fish superclass. Osteichthyes,. Class. Actinopterygii,. Order. Cypriniformes, and minnow family Cyprinidae (Nelson.
[81]
A flooded future for River Chub? Future impacts of climate change ...
May 5, 2023 · River Chub nests are vulnerable to high flows caused by excessive precipitation and by urbanization of watersheds. Using predictions of climate ...
[82]
[PDF] U.S. Fish and Wildlife Service Draft Recovery Plan for the Peppered ...
This document presents the U.S. Fish and Wildlife Service's (USFWS) plan for the conservation of the peppered chub. The recovery plan is the second part of ...
[83]
Draft Recovery Plan for the Peppered Chub | FWS.gov
Aug 18, 2025 · This document is a draft recovery plan for the peppered chub, dated August 2025. Recovery plans describe the envisioned recovered state for a ...
[84]
Avoiding a macabre future for Macrhybopsis—A special section on ...
Oct 8, 2023 · Twelve recognized species in genus Macrhybopsis are distributed across Canada, Mexico, and the United States. Most chubs have elevated conservation concerns.