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Fish bone

A fish bone is any bony tissue in a fish, although in common usage the term refers specifically to delicate parts of the non-vertebral skeleton. In bony fishes (Osteichthyes), fish bones form a rigid framework composed primarily of calcified tissue that supports the body, protects vital organs, and enables movement through articulated structures such as the vertebral column and fin rays.^[1]^[2] Unlike the cartilaginous skeletons of chondrichthyans like sharks, the bony fish skeleton is ossified, consisting of bone impregnated with calcium phosphate minerals such as hydroxyapatite, which provides strength and durability.^[2]^[3] The skeletal system of bony fish includes several key elements: the cranium, a protective bony enclosure for the brain with openings for sensory organs; the vertebral column, a flexible series of vertebrae that encases the spinal cord and allows lateral bending; and ribs that shield the visceral cavity containing organs like the heart and swim bladder.^[1] Fins are supported by specialized bony elements, including stiff spines for defense and soft, branched rays for propulsion and maneuvering, with over 30,000 species of bony fish exhibiting variations adapted to diverse aquatic environments.^[1]^[2] Additionally, small otoliths—dense, calcareous structures in the inner ear—aid in balance, orientation, and detection of vibrations.^[1] Many teleost fishes, the largest subgroup of bony fish, feature acellular bone, lacking living osteocytes and relying on minimal remodeling for growth, which contrasts with the cellular bone in other vertebrates.^[3] Bony fish lack parathyroid glands and regulate calcium differently, supporting buoyancy control via the swim bladder and evolutionary innovations like ray-finned structures, distinguishing bony fish from jawless or cartilaginous lineages.^[2]^[4] Overall, fish bones exemplify vertebrate skeletal evolution, balancing lightness for swimming efficiency with robustness for survival in marine and freshwater habitats.^[1]^[3]

Anatomy

Structure and Composition

Fish bones constitute a rigid form of calcified connective tissue, primarily composed of hydroxyapatite crystals embedded within an organic matrix dominated by type I collagen fibers.^[5] This composite structure provides mechanical strength and flexibility, with hydroxyapatite accounting for approximately 70% of the dry weight and collagen comprising about 20-30%.^[6] Bone formation in fish occurs through two primary processes: intramembranous ossification, where mesenchymal cells directly differentiate into osteoblasts to deposit bone matrix, and endochondral ossification, involving a cartilaginous precursor model that is subsequently replaced by bone.^[7] These mechanisms are conserved across osteichthyan fish, adapting to species-specific growth patterns in aquatic conditions.^[8] At the microscopic level, fish bone exhibits a lamellar organization, with concentric layers of mineralized matrix, but many teleost species feature anosteocytic bone lacking embedded osteocytes, unlike the osteocyte-rich structure in terrestrial vertebrates.^[9] Haversian canals, which house blood vessels in compact bone of higher vertebrates, are typically absent or rudimentary in fish, reflecting adaptations to lower mechanical loads and buoyancy in water.^[10] Mineralization density in fish bone is notably lower than in terrestrial vertebrates, averaging 1.0-1.2 g/cm³ compared to 1.8-2.0 g/cm³ in mammalian cortical bone, which reduces overall skeletal weight for neutral buoyancy while maintaining sufficient rigidity.^[11] In contrast to cartilage, which consists of a flexible, avascular matrix of collagen and proteoglycans with minimal or no calcification, fish bones achieve long-term structural rigidity through extensive hydroxyapatite deposition, enabling load-bearing in dynamic aquatic environments.^[5] The evolutionary origins of fish bones trace back to ancient sarcopterygian fishes, with the earliest fossil evidence of ossified skeletal elements appearing around 420 million years ago during the Devonian period.^[12] These early bony structures marked a key innovation in osteichthyan evolution, transitioning from cartilaginous ancestors and enabling diverse adaptations in aquatic vertebrates.^[13]

Types and Locations

Fish bones are broadly classified into three categories based on their developmental origin and position: the axial skeleton, which forms the central axis of the body; the appendicular skeleton, which supports the fins; and the dermal skeleton, which arises from the integument and provides external protection.^[14] The axial skeleton includes the vertebral column composed of centra and associated ribs that run parallel to the spine.^[14] The appendicular skeleton encompasses the pectoral and pelvic girdles along with fin rays, such as the scapular elements connecting fins to the body.^[14] Dermal bones, in contrast, develop through intramembranous ossification and include protective structures like scales covering the body and opercular bones that form the gill cover.^[14] Unique to fish, particularly teleosts, are intramuscular bones embedded within the myosepta that separate muscle segments, allowing flexibility while providing support.^[15] These include epineuralia, slender bones located dorsally above the horizontal septum and attached to the neural arches; epipleuralia, positioned ventrally below the septum and connected to ribs or hemal arches; and myorhabdoi, short, unattached segmental plates found in the forward flexures of the myoseptum in certain teleost species like those in Clupeiformes.^[15] These bones typically ossify from tendons via intramembranous processes and vary in number, with epineuralia and epipleuralia present in most basal teleosts but absent in advanced groups like Perciformes.^[16] Key locations of fish bones span the cranium, vertebral column, and fins. In the cranium, dermal bones such as the premaxilla form the anterior upper jaw and bear teeth for feeding.^[17] The vertebral column consists of successive centra, the cylindrical bodies that enclose the notochord, topped by neural arches that protect the spinal cord.^[18] In the pectoral and pelvic fins, lepidotrichia serve as segmented rays at the distal margin, consisting of paired, crescentic hemisegments that support fin webbing and enable precise maneuvering.^[19] Certain fish exhibit specialized bone variations for defense, such as rigid fin spines in perciform species like perch, where dorsal and anal fin spines increase body depth to deter predators by complicating ingestion.^[20] In catfish (Siluriformes), pectoral fin spines feature serrations and a locking mechanism that deploys perpendicular to the body, creating a physical barrier and potentially inflicting wounds on attackers.^[21]

Functions

Support and Movement

The axial skeleton in fish, comprising the vertebral column and associated elements, provides essential longitudinal support while enabling flexible body bending. This structure maintains structural integrity during locomotion, particularly in undulatory swimming, where sequential vertebral articulation allows propagating waves along the body to generate propulsion.^[22]^[23] The appendicular skeleton supports paired fins critical for propulsion and control, with pectoral fins primarily stabilizing the body during turns and maintaining pitch, while pelvic fins facilitate precise maneuvering and yaw adjustments. These fin rays, composed of bony lepidotrichia, articulate with the pectoral and pelvic girdles to produce hydrodynamic forces that enhance directional changes without disrupting the primary axial thrust.^[1]^[24] Intermuscular bones within the myosepta anchor successive myomeres, the segmented muscle blocks, optimizing force transmission for undulatory thrust and minimizing energy dissipation in fluid interactions. By reinforcing myoseptal planes, these bones ensure efficient lateral muscle contractions that propagate waves with reduced drag, enhancing overall swimming economy.^[15]^[25] Fish bones exhibit adaptations for buoyancy, featuring reduced density and integration with the swim bladder to achieve neutral buoyancy, thereby minimizing gravitational loading on the skeleton during movement. In jaw and opercular mechanisms, lever systems amplify muscle force for feeding excursions; torque is generated as \tau = F \times d, where \tau is torque, F is applied force, and d is the moment arm length, enabling efficient opercular expansion.^[1]^[26]^[27]

Protection and Respiration

Fish bones play a crucial role in protecting vital organs and facilitating respiration. The cranial bones form a rigid enclosure around the brain, shielding it from physical injury and environmental pressures encountered in aquatic habitats. This protective cranium, composed of multiple fused elements, ensures the central nervous system remains safeguarded during movement through water or encounters with obstacles.^[1] The opercular bones, forming a bony flap over the gill chamber, provide essential protection for the gills against direct injury from predators, debris, or high-velocity water currents. By covering the delicate gill filaments, the operculum prevents damage while allowing controlled water flow for gas exchange, maintaining respiratory efficiency even under stress. In conjunction with overall skeletal support, these bones contribute to the structural integrity needed for survival in dynamic aquatic environments.^[1]^[28] Ribs, thin curved bones attached along the vertebral column, encase and protect internal organs such as the heart, liver, and viscera from mechanical damage during predation attempts or physical impacts. In species like salmon, these lightweight ribs offer targeted defense without compromising buoyancy. Complementing this, dermal plates in armored catfish, such as those in Pterygoplichthys pardalis, consist of a sandwich-like nanocomposite structure with porous inner matrices flanked by dense external layers, providing lightweight yet tough armor that resists predator penetration and minimizes injury. This hierarchical design enhances resilience, allowing the fish to deter attacks effectively.^[29]^[30] For respiration, branchiostegal rays—elongated bony supports along the lower edge of the operculum—bolster the branchiostegal membrane, enabling efficient expansion and contraction of the gill chamber to pump water over the gills. These rays, derived from branchial arch elements, increase the volume of the opercular cavity, facilitating unidirectional water flow that optimizes oxygen extraction even when the fish is stationary. By aiding in the closure of the opercular cavity, they support rhythmic ventilatory cycles essential for sustaining metabolic demands.^[31]^[32] Certain fish bones also serve as defensive spines, exemplified by the venomous dorsal, anal, and pelvic spines in lionfish (Pterois volitans). These spines feature a tri-lobed cross-section with longitudinal grooves housing venom glands, allowing toxin delivery upon penetration, while serrated edges along their length inflict additional mechanical damage to deter predators. The integumentary sheath over the venom tissue ruptures during contact, enhancing the spines' role as a passive yet potent barrier that combines structural deterrence with chemical defense.^[33]^[34]

Diversity in Fish

In Bony Fish (Osteichthyes)

Bony fish, classified as Osteichthyes, possess ossified endoskeletons composed primarily of bone tissue, distinguishing them from cartilaginous relatives through bone tissue composed of a calcium phosphate matrix, which in many teleosts is acellular and lacks osteocytes. This ossification is prevalent across both major subclasses: the ray-finned fish (Actinopterygii), which dominate modern diversity, and the lobe-finned fish (Sarcopterygii), including coelacanths and lungfishes. Within Actinopterygii, teleosts exhibit particularly complex skeletal features, such as intermuscular bones that form slender, linear structures embedded in the myosepta between muscle segments via intramembranous ossification from tendon precursors.^[35]^[36]^[15] Evolutionary trends in Osteichthyes show a marked increase in bone complexity following the Devonian period, approximately 419 to 358 million years ago, as ray-finned fish diversified and refined their skeletal architectures for aquatic lifestyles. Fossil records, such as the lobe-finned fish Eusthenopteron from the late Devonian (around 375 million years ago), reveal transitional forms where robust fin bones with internal supports prefigured the limb structures of tetrapods, highlighting early advancements in ossification patterns. Post-Devonian radiations led to more intricate vertebral columns and dermal elements in Actinopterygii, enabling adaptations to varied habitats while maintaining lightweight endoskeletons relative to earlier forms.^[37]^[38] Skeletal adaptations in Osteichthyes reflect ecological demands, with fast-swimming teleosts developing thin, lightweight bones that enhance flexibility and reduce drag for sustained propulsion. For instance, intermuscular bones in these species facilitate efficient force transmission from muscles to the axial skeleton during high-speed locomotion, as seen in species undergoing mechanical loading from swimming. In contrast, primitive groups like sturgeons (Acipenseriformes, within Actinopterygii) retain heavy dermal armor in the form of scutes—bony plates derived from neural crest cells—that provide robust protection against predators in benthic environments.^[16]^[39]^[40] Specific examples illustrate this diversity: in Atlantic salmon (Salmo salar), the vertebral column comprises an average of 58 robust, amphicoelous vertebrae that support strenuous upstream migrations, serving as a mineral reservoir for calcium during fasting. Conversely, in eels (Anguilla spp.), the skeleton is highly reduced during spawning migration, with bone resorption leading to over 50% loss in the cranium and 65% in the vertebral column, leaving primarily the cranium and vertebrae as persistent bony structures. Similar reductions occur in certain deep-sea anglerfish (Ceratioidei), where thin, flexible bones accommodate extreme sexual dimorphism and parasitic mating behaviors, minimizing skeletal mass except in core elements like the cranium and spine.^[41]^[42]^[42]^[43]

In Cartilaginous Fish (Chondrichthyes)

Chondrichthyes, encompassing sharks, rays, skates, and chimaeras, possess predominantly cartilaginous endoskeletons that lack true bone, instead featuring specialized mineralized structures for reinforcement. This skeleton consists of hyaline cartilage reinforced by tesserae—small, polygonal tiles of calcified tissue that form a superficial layer on cartilage surfaces, particularly in regions requiring enhanced strength such as the jaws and vertebrae. These tesserae exhibit prismatic mineralization in their cap zones, composed of hydroxyapatite prisms arranged in a tiled pattern, which provides rigidity without the full ossification seen in bony fishes.^[44] In sharks, such as the spiny dogfish (Squalus acanthias), the rostral cartilage forms a reinforced snout tip for sensory and predatory functions, while male claspers—elongated cartilaginous structures used in reproduction—are supported by calcified elements for durability. Rays and skates, like the little skate (Leucoraja erinacea), display flattened pectoral skeletons where tesserae create a broad, flexible framework essential for undulatory swimming, with vertebral centra showing globular mineralization patterns that maintain structural integrity under hydrodynamic stresses. These adaptations highlight the class's reliance on calcified cartilage rather than bone, enabling precise control during agile predation.^[45] The cartilaginous skeleton of Chondrichthyes represents a persistent evolutionary trait from ancestral jawed vertebrates, dating back over 400 million years to the Early Devonian, when early chondrichthyans diverged with lightweight, flexible endoskeletons suited to aquatic predation. This retention offers advantages in flexibility, allowing rapid jaw protrusion and body maneuvers critical for capturing prey, while the absence of heavy bone compensates for the lack of swim bladders by promoting buoyancy through lower skeletal density, often augmented by lipid-rich livers. Fossil evidence from Devonian sharks supports this, showing early tessellated mineralization as a conserved feature that enhances predatory efficiency without sacrificing mobility.^[45] Rare instances of ossification occur in some chimaeras (Holocephali), where thin layers of bone-like tissue appear in neural arches or vertebral regions, such as in the rabbitfish (Hydrolagus colliei), but these are minimal and do not extend to full bony replacement, preserving the overall cartilaginous character. This limited endochondral ossification contrasts with the more extensive mineralization in elasmobranchs (sharks and rays) and underscores the evolutionary specialization of Chondrichthyes for lightweight, resilient skeletons.^[44]

Human Interactions

Culinary Preparation

In culinary preparation, fish bones are typically removed through filleting techniques that separate the flesh from the skeletal structure, followed by targeted deboning to eliminate remaining pin bones. Filleting involves making precise cuts along the backbone to lift away the fillets, often using a sharp knife to minimize meat loss, while pin bones—small, intramuscular bones—are extracted manually with tweezers or pliers in artisanal settings, or via automated machines in commercial processing that employ vibrating heads or rollers to pull bones without damaging the fillet.^[46]^[47]^[48] The edibility of fish bones varies by species and size, with smaller fish like sardines featuring soft, calcium-rich bones that are commonly consumed whole, either fresh or canned, providing nutritional benefits such as enhanced mineral intake. In contrast, the harder, larger spines and ribs in species like salmon or cod are generally discarded after removal to ensure a bone-free texture suitable for most dishes.^[49]^[50]^[51] Cultural practices highlight the resourceful use of fish bones, particularly in Asian cuisines where they are simmered into bone broths to extract collagen, resulting in creamy, nutrient-dense soups like Chinese milky fish broth made from grouper or mackerel bones boiled with ginger and scallions. Additionally, bones from processing are often ground into fish meal or powder, which can be incorporated into fortified foods such as baked goods or supplements for its high protein and mineral content.^[52]^[53]^[54] Historically, ancient preservation methods included smoking whole fish with bones intact, a technique used by Mesolithic communities in the Mediterranean to cure and flavor seafood through exposure to wood smoke, extending shelf life without modern refrigeration.^[55]^[56]

Health and Safety Concerns

Fish bone ingestion represents a significant health risk primarily due to the potential for impaction in the pharynx or esophagus, which is a common presentation in emergency departments, especially in regions where fish consumption is high. In the United States, foreign body ingestion leads to over 150,000 reports annually to poison control centers, with fish bones being among the most frequently ingested sharp objects. Approximately 80-90% of swallowed foreign bodies, including fish bones, pass spontaneously through the gastrointestinal tract, but 10-20% require endoscopic intervention, and less than 1% necessitate surgical removal. Complications arise from the sharp, often barbed nature of fish bones, which can cause mucosal abrasion, perforation, or migration, leading to severe issues such as abscess formation or infection. Symptoms of fish bone impaction typically include a sensation of a foreign body, throat pain, dysphagia (difficulty swallowing), odynophagia (painful swallowing), retrosternal discomfort, and occasionally retching or vomiting. Diagnosis often begins with clinical history and physical examination, followed by imaging; plain X-rays have low sensitivity (around 32%) for detecting fish bones due to their radiolucency, making endoscopy the preferred confirmatory method for visualization and potential immediate removal. The barbed structure of many fish bones, such as those from species like perch or mackerel, can embed deeply into tissues, complicating extraction and increasing the risk of tissue trauma during procedures. Treatment primarily involves endoscopic retrieval under sedation, which successfully removes the bone in the majority of cases presenting to emergency care, with about 81.6% of patients achieving symptomatic relief following initial management by emergency physicians. In 10-20% of retained cases, rigid or flexible endoscopy is required, while surgical intervention is reserved for complications like perforation or migration, occurring in fewer than 1% of instances. Prevention focuses on thorough deboning of fish during culinary preparation to minimize ingestion risks, particularly for vulnerable groups. Incidence is higher among children aged 6 months to 3 years, who account for a significant portion of pediatric foreign body cases (with fish bones comprising up to 50% in some studies), and in older adults due to age-related swallowing dysfunction, such as in those over 40 with conditions like stroke or dementia. Beyond mechanical risks, improperly handled fish bones can contribute to bacterial infections if the fish is contaminated during processing or storage. For instance, Salmonella species, which are known to contaminate fish through environmental exposure or poor hygiene, have been linked to outbreaks from undercooked or mishandled seafood, potentially leading to gastroenteritis with symptoms like diarrhea, fever, and abdominal pain in consumers who ingest bone fragments from affected fish.

Applications

Environmental Uses

Ground fish bones, rich in apatite phosphate, have been applied in bioremediation efforts to immobilize lead in contaminated urban soils by forming stable pyromorphite minerals. In laboratory tests, this treatment reduced lead bioaccessibility by up to 50% within weeks, while field applications in areas like South Prescott, Oakland, demonstrated a drop in soil leachate lead concentrations from 0.28 mg/L to 0.00065 mg/L.^[57] These phosphate amendments are tilled into soil at rates of about 3 pounds per square foot, followed by covering with clean soil and vegetation to support long-term stabilization.^[57] Fish bones also play a role as organic fertilizers due to their high calcium phosphate content, which supplies essential phosphorus to enhance soil fertility and plant growth. Processed into fish bone meal, these materials are integrated into aquaculture waste management systems to recycle nutrients from processing byproducts, minimizing nutrient runoff and promoting circular economies in fish farming.^[58] For instance, thermal conversion techniques transform fish bones into phosphorus-rich fertilizers suitable for low-cost applications in developing regions.^[59] In water treatment, bone char produced from fish bones serves as a sorbent in filtration systems to remove fluoride and other contaminants through adsorption processes linked to hydroxyapatite structures. Evaluations of fish bone char have shown adsorption capacities for fluoride up to 0.678 mg/g, with effective simultaneous removal of fluoride and arsenic in aqueous solutions under varying conditions.^[60] Recent studies as of 2023–2025 have extended this to chemically activated fish bones for removing heavy metals like cadmium and lead, achieving up to 95% efficiency, and functionalized variants for textile dye adsorption in wastewater.^[61]^[62] This approach offers a sustainable alternative for decentralized water purification, particularly in fluoride-affected regions.^[60] Recycling fish bones from processing waste contributes to environmental sustainability by diverting materials from landfills and reducing overall ecological footprint. Global fishery waste, including bones and other byproducts, is generated at an estimated 50–125 million tons annually, underscoring the scale of opportunities for waste valorization in remediation and resource recovery.^[58] Such practices align with broader efforts to manage the 20–60% of fish mass typically discarded during filleting and processing.^[58]

Scientific and Cultural Roles

Fish bones have played a pivotal role in paleontology, serving as crucial fossils that illuminate the evolutionary history of vertebrates. Dating back to the Ordovician period around 460 million years ago, early jawless fish like Astraspis exhibit the first bony skeletons, marking the transition from soft-bodied ancestors to more rigid structures that enabled greater mobility and protection.^[63] These fossils, often preserved in fine-grained sediments, provide insights into the diversification of skeletal elements, with placoderms from the Devonian period (about 419–358 million years ago) showcasing primitive bony armor and head shields that foreshadowed modern fish anatomy.^[64] A landmark example is Tiktaalik roseae, a 375-million-year-old transitional form discovered in Ellesmere Island, Canada, whose fin and pelvic girdle bones reveal intermediate features between aquatic fish and terrestrial tetrapods, such as robust limb-like structures supporting weight-bearing.^[65] Such specimens have been instrumental in reconstructing the stepwise evolution of vertebrate locomotion and skeletal complexity.^[66] In archaeological research, fish bones undergo isotopic analysis to reconstruct ancient diets and environments, leveraging stable isotopes like carbon-13 (δ¹³C) and nitrogen-15 (δ¹⁵N). These ratios in bone collagen differentiate marine from freshwater habitats, as marine ecosystems typically yield higher δ¹⁵N values due to longer food chains, while δ¹³C helps distinguish benthic from pelagic sources.^[67] For instance, studies of medieval European sites have used fish bone isotopes to infer shifts in protein consumption, revealing reliance on freshwater species during periods of terrestrial resource scarcity.^[68] This method extends to broader ecological profiling, enabling researchers to map historical fishing practices and environmental changes without direct ethnographic records.^[69] Culturally, fish bones have been integral to indigenous tool-making and symbolic practices across various societies. In Native American traditions, particularly among Pacific Northwest and Southeastern groups, fish bones were carved into hooks and gorges for fishing, with examples from sites like Bayou Jasmine in Louisiana demonstrating intricate designs from bone and antler that facilitated efficient capture of species like catfish.^[70] These artifacts, often hafted with sinew, reflect adaptive technologies honed over millennia for subsistence.^[71] In Polynesian cultures, fish bones contributed to composite tools and held symbolic value; for example, bone elements in fishhooks (makau) symbolized prosperity and safe voyages, embodying connections to ancestral marine environments in Hawaiian and Maori lore.^[72] Modern scientific applications draw on fish bone biomechanics to inspire robotics, focusing on their inherent flexibility for enhanced mobility. The segmented structure of fish vertebral columns allows controlled bending without fracture, a property modeled in soft robotics to mimic undulating locomotion.^[73] Researchers have developed bioinspired designs, such as rigid-flexible-soft fishbone units using multi-material 3D printing, which enable one-dimensional curvature for underwater propulsion while maintaining structural integrity.^[74] These models, informed by finite element analysis of fish skeletal damping and stiffness, improve energy efficiency in robotic swimmers, with applications in ocean exploration and search-and-rescue operations.^[75] Additionally, as of 2024, nano-hydroxyapatite derived from fish bones has been explored for biomedical applications, including bone scaffolds and drug delivery due to its biocompatibility and similarity to human bone mineral.^[76]

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https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2021.660767/full
[46]
Pin bone removal | Efficient and yield optimising - Uni-Food Technic
Uni-Food Technic's pin bone removal systems debone salmon, trout, and similar species, resulting in a fillet with no pin bones and a 0.5% yield loss.
[47]
Tips & Tricks: How to Remove Pin Bones From Salmon - ChefSteps
Start with cold salmon, use a knife to perk up bones, then use fish bone pliers to pull them out at a 45-degree angle.
[48]
Here's How to Eat Sardines Like an Adult - Epicurious
Jul 12, 2017 · You can buy tinned sardines that are skinless and boneless, but the skin and bones are completely edible, supply a good amount of sardines' ...
[49]
Are the Bones in Tinned Fish Safe to Eat? The Answer Might ...
Jul 2, 2025 · According to dietitians, the bones in tinned fish are softened during the canning process and are not only safe to eat, but also very nutritious.
[50]
Development of added-value culinary ingredients from fish waste
From these, fish bones and scales represent 14–20% of by-products, which are also discarded. Therefore, there is an unmet need for valorising these by-products ...
[51]
https://www.sciencedirect.com/science/article/pii/S1878450X22001925
[52]
Milky fish broth - by Pamelia Chia - Singapore Noodles
Feb 19, 2024 · So the key, if you're making a fish broth, is to use a fish that is rich in collagen. In Singapore, fish such as grouper or Spanish mackerel is ...
[53]
Nutritional Properties of Fish Bones: Potential Applications in the ...
Jan 17, 2023 · Fish bones are rich in calcium and bioactive peptides and can be used as ingredients for the manufacture of functional foods or to improve the technological ...<|control11|><|separator|>
[54]
Fish and salt: The successful recipe of White Nile Mesolithic hunter ...
Archaeozoological studies indicate early intensive fish curing, salting and/or smoking at Mesolithic sites in the eastern Mediterranean islands from Sicily to ...
[55]
https://www.sciencedirect.com/science/article/abs/pii/S0305440318300426
[56]
Remediating Soil Lead with Fish Bones | Environmental Health Perspectives | Vol. 120, No. 1
### Summary: Using Fish Bones for Lead Remediation in Soil
[57]
Nutrient recovery and recycling from fishery waste and by-products
Dec 15, 2023 · Between 50–125 million tons of fishery waste were generated in 2018 and the amount would increase with respect to the increasing trend of fish ...
[58]
Thermal conversion of fish bones into fertilizers and biostimulants for ...
Highlights · Fish bones were converted into P-fertilizer and plant biostimulants. · A simple and easy scalable process with potential for LDCs was used.
[59]
An Evaluation of Fish Bone Char as an Appropriate Arsenic and ...
Dec 3, 2009 · The study also found that fish bone char can remove fluoride and arsenic simultaneously with minimal competition, albeit fluoride is removed ...<|separator|>
[60]
Ancient fish fossil suggests 'living skeletons' evolved 460 million ...
Jan 10, 2025 · Among the earliest animals to have a bony skeleton is a 460-million-year-old jawless fish known as Astraspis. Earlier fishes had skeletons of ...
[61]
Fish - British Geological Survey
The most primitive bony fish were the placoderms. They had a bony skeleton, an 'armoured' head shield and plates that covered the front part of their body (e.g. ...
[62]
The axial skeleton of Tiktaalik roseae - PNAS
Apr 2, 2024 · Here, we describe the axial skeleton of the elpistostegalian Tiktaalik roseae and show that transformations to the axial column for head ...<|control11|><|separator|>
[63]
Pelvic girdle and fin of Tiktaalik roseae - PMC - NIH
The discovery of pelvic girdle and fin material of the tetrapodomorph Tiktaalik roseae reveals a transitional stage in the origin of the pelvic girdle and ...
[64]
Carbon and nitrogen stable isotope ratio analysis of freshwater ...
Apr 5, 2012 · The study measured carbon and nitrogen isotopes in 157 fish bones from 15 Belgian sites, aiming to characterize fish ecology and trophic levels.
[65]
Reconstructing medieval diets through the integration of stable ...
Jul 21, 2025 · This study uses stable isotopes and ancient proteins from dental calculus, dentin, and bone to reconstruct medieval diets, finding C3 plant and ...
[66]
δ 13 С and δ 15 N isotope analysis of modern freshwater fish in the ...
Oct 10, 2021 · Carbon (δ13C) and nitrogen (δ15N) stable isotope ratios for fish bones from archaeological contexts are typically used as a background data, ...
[67]
Fishhooks and Net-Making Tools
Archeologists found 56 examples of bone and antler fishhooks. (Bottom) People also may have caught fish using nets. Archaeologists found several small ...Missing: American | Show results with:American
[68]
Bone Tools - Peach State Archaeological Society
Fish hooks are one of the most desirable and collected of all bone artifacts. Hooks come in a variety of single and multiple bone designs. The most common fish ...
[69]
[PDF] The Historical Role of Bonefishes (Albula spp.) in Polynesian Fisheries
Oct 3, 2025 · They are major contributors to some Pacific artisanal fisheries, as on Tarawa Atoll where historically they have contributed 45% of the catch ( ...Missing: divination | Show results with:divination<|control11|><|separator|>
[70]
Tunable stiffness enables fast and efficient swimming in fish-like robots
Aug 11, 2021 · We explore how fish leverage tunable flexibility by using their muscles to modulate the stiffness of their tails to achieve efficient swimming.
[71]
A bioinspired fishbone continuum robot with rigid-flexible-soft ...
The proposed bioinspired fishbone unit, having good one-dimensional bending properties, is a special rigid-flexible-soft structure mainly made by multi-material ...
[72]
Fish fins are teaching us the secret to flexible robots and new shape ...
Aug 18, 2021 · Fish fins are extremely flexible yet also strong. A special segmented fin design is the key to this useful combination of properties and ...