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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. Fish migration - Wikipedia

    en.wikipedia.org/wiki/Fish_migration

    Many species of salmon are anadromous and can migrate long distances up rivers to spawn Allowing fish and other migratory animals to travel the rivers can help maintain healthy fish populations. Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ...

  4. Eschmeyer's Catalog of Fishes - Wikipedia

    en.wikipedia.org/wiki/Eschmeyer's_Catalog_of_Fishes

    Catalog of Fishes is a comprehensive on-line database and reference work on the scientific names of fish species and genera. It is global in its scope and is hosted by the California Academy of Sciences. It has been compiled and is continuously updated by the curator emeritus of the CAS fish collection, William N. Eschmeyer.

  5. List of vulnerable fishes - Wikipedia

    en.wikipedia.org/wiki/List_of_vulnerable_fishes

    Of all evaluated fish species, 8.1% are listed as vulnerable. The IUCN also lists eight fish subspecies as vulnerable. Of the subpopulations of fishes evaluated by the IUCN, 18 species subpopulations have been assessed as vulnerable. For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative ...

  6. Diversity of fish - Wikipedia

    en.wikipedia.org/wiki/Diversity_of_fish

    Most oceanic species (78 per cent, or 44 per cent of all fish species), live near the shoreline. These coastal fish live on or above the relatively shallow continental shelf. Only 13 per cent of all fish species live in the open ocean, off the shelf. Of these, 1 per cent are epipelagic, 5 per cent are pelagic, and 7 per cent are deep water. [16]

  7. Indo-Pacific blue marlin - Wikipedia

    en.wikipedia.org/wiki/Indo-Pacific_blue_marlin

    The classification of the Indo-Pacific blue marlin (M. mazara) and the Atlantic blue marlin (M. nigricans) as separate species is under debate. [1] Genetic data suggest, although the two groups are isolated from each other, that they are both the same species, with the only genetic exchange occurring when Indo-Pacific blue marlin migrate to and ...

  8. List of fish families - Wikipedia

    en.wikipedia.org/wiki/List_of_fish_families

    This is a list of fish families sorted alphabetically by scientific name. There are 525 families in the list.

  9. Taxonomic rank - Wikipedia

    en.wikipedia.org/wiki/Taxonomic_rank

    A taxon is usually assigned a rank when it is given its formal name. The basic ranks are species and genus. When an organism is given a species name it is assigned to a genus, and the genus name is part of the species name. The species name is also called a binomial, that is, a two-term name.