Teleost
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Teleostei, members of which are known as teleosts, is, by far, the largest group of ray-finned fishes, with 96% of all extant species of fish. The Teleostei, which is variously considered a division o
F de Castelnau poissons Diversity of Fishes
Teleost skull and jaw anatomy enables them both to suck in prey, and to close the mouth without expelling the prey again.
Caudal skeleton showing symmetrical (homocercal) tail
Aspidorhynchus acustirostris, an early teleost from the Middle Jurassic
Actinopterygii
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Actinopterygii, members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that constitutes nearly 99% of the over 30,000 living species of fish. The vast majority of e
Teleost
…téleios) 'complete' and ὀστέον (ostéon) 'bone'), members of which are known as teleosts (), is, by far, the largest group of ray-finned fishes (class Actinopterygii), with 96% of all extant species of fish. The Teleostei, which is variously considered a division or an infraclass in different taxonomic systems…
Actinopterygii
Anatomy of a typical ray-finned fish (cichlid) A: dorsal fin, B: fin rays, C: lateral line, D: kidney, E: swim bladder, F: Weberian apparatus, G: inner ear, H: brain, I: nostrils, L: eye, M: gills, N: heart, O: stomach, P: gall bladder, Q: spleen, R: internal sex organs (ovaries or testes), S: pelvic fins, T: spine, U: anal fin, V: tail (caudal fin). Possible other parts not shown: barbels, adipose fin, external genitalia (gonopodium)
Tuna are streamlined for straight line speed with a deeply forked tail
Cod have three dorsal and two anal fins, which give them great maneuverability