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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]
The world's deepest living fish, Abyssobrotula galatheae, a species of cusk eel, lives in the Puerto Rico Trench at a depth of 8,372 meters (27,467 ft). [23] [25] Due to the extreme pressure, this appears to be around the theoretical maximum depth possible for fish. [26] [27] Stone loach
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.
Educational Video Presentations 50930 Really Wild Animals: Monkey Business and Other Family Fun 1995 1996 500 National Geographic Kids Video 50932 Puma: Lion of the Andes 1996 1996 60 0-7922-3626-2 National Geographic Television Special 50933 World's Last Great Places: Okavango: Africa's Wild Oasis 1996 1996 90 0-7922-3628-9
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.
Depending on the species, anemonefish are overall yellow, orange, or a reddish or blackish color, and many show white bars or patches. The largest can reach a length of 17 cm (6 + 1 ⁄ 2 in), while the smallest barely achieve 7–8 cm (2 + 3 ⁄ 4 – 3 + 1 ⁄ 4 in).
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.
Fish stubs (6 C, 32 P) Pages in category "Fish" The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes. ...