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  2. Fish anatomy - Wikipedia

    en.wikipedia.org/wiki/Fish_anatomy

    Also part of the fish's integumentary system are the scales that cover the outer body of many jawed fish. The commonly known scales are the ones that originate from the dermis or mesoderm, and may be similar in structure to teeth. Some species are covered by scutes instead. Others may have no scales covering the outer body.

  3. Fish physiology - Wikipedia

    en.wikipedia.org/wiki/Fish_physiology

    Fish physiology is the scientific study of how the component parts of fish function together in the living fish. [2] It can be contrasted with fish anatomy, which is the study of the form or morphology of fishes. In practice, fish anatomy and physiology complement each other, the former dealing with the structure of a fish, its organs or ...

  4. Fish fin - Wikipedia

    en.wikipedia.org/wiki/Fish_fin

    Fish fins are distinctive anatomical features with varying structures among different clades: in ray-finned fish (Actinopterygii), fins are mainly composed of bony spines or rays covered by a thin stretch of scaleless skin; in lobe-finned fish (Sarcopterygii) such as coelacanths and lungfish, fins are short rays based around a muscular central ...

  5. Fish - Wikipedia

    en.wikipedia.org/wiki/Fish

    A fish (pl.: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits.Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians.

  6. Fish bone - Wikipedia

    en.wikipedia.org/wiki/Fish_bone

    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 of such as ribs, fin spines and intramuscular bones. Not all fish have fish bones in this sense; for instance, eels and anglerfish do not possess bones other than the cranium and the vertebrae.

  7. Do fish feel pain? Why some scientists are split on the debate

    www.aol.com/fish-feel-pain-why-scientists...

    The tough part is that fish cannot be compared to other species, she said, like mammals or birds. "That has a lot to do with their anatomy and physiology and the way that their brains and their ...

  8. Fish gill - Wikipedia

    en.wikipedia.org/wiki/Fish_gill

    Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills that are protected under gill covers (operculum) on both sides of the pharynx (throat). Gills are tissues that are like short threads, protein structures called filaments. These filaments have many functions including ...

  9. Fish locomotion - Wikipedia

    en.wikipedia.org/wiki/Fish_locomotion

    Fish locomotion is the various types of animal locomotion used by fish, principally by swimming. This is achieved in different groups of fish by a variety of mechanisms of propulsion, most often by wave-like lateral flexions of the fish's body and tail in the water, and in various specialised fish by motions of the fins. The major forms of ...