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  2. Taxonomy of fish - Wikipedia

    en.wikipedia.org/wiki/Taxonomy_of_fish

    Fishes are a paraphyletic group and for this reason, the class Pisces seen in older reference works is no longer used in formal taxonomy.Traditional classification divides fish into three extant classes (Agnatha, Chondrichthyes, and Osteichthyes), and with extinct forms sometimes classified within those groups, sometimes as their own classes: [1]

  3. Diversity of fish - Wikipedia

    en.wikipedia.org/wiki/Diversity_of_fish

    In practice, feeding modes lie on a spectrum, with suction and ram feeding at the extremes. Many fish capture their prey using both suction pressure combined with a forward motion of the body or jaw. [85] Most fish are food opportunists, or generalists. They eat whatever is most easily available. [86]

  4. Category:Fish by classification - Wikipedia

    en.wikipedia.org/wiki/Category:Fish_by...

    Class Cephalaspidomorphi - lampreys; Superclass Gnathostomata Vertebrates with jaws Class Chondrichthyes (cartilagineous fish - sharks and rays) Class Osteichthyes (bony fish), which has two subclasses: Actinopterygii (ray-finned fish) Sarcopterygii (lobe-finned fish) Full details of higher order fish taxonomy can be found in the Chordata article.

  5. Fishes of the World - Wikipedia

    en.wikipedia.org/wiki/Fishes_of_the_World

    Fishes of the World is a standard reference for the systematics of fishes. It was first written in 1976 by the American ichthyologist Joseph S. Nelson (1937–2011). Now in its fifth edition (2016), the work is a comprehensive overview of the diversity and classification of the 30,000-plus fish species known to science.

  6. Fish anatomy - Wikipedia

    en.wikipedia.org/wiki/Fish_anatomy

    In bony fish, the intestine is relatively short, typically around one and a half times the length of the fish's body. It commonly has a number of pyloric caeca , small pouch-like structures along its length that help to increase the overall surface area of the organ for digesting food.

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  8. List of fish common names - Wikipedia

    en.wikipedia.org/wiki/List_of_fish_common_names

    Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups.Ambiguous common names are accompanied by their possible meanings.

  9. 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.