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Cephalopods have a rare form of physiological color change which utilizes neural control of muscles to change the morphology of their chromatophores. This neural control of chromatophores has evolved convergently in both cephalopods and teleosts fishes. [50]
Teleosts including the brown trout and the scaly osman are found in mountain lakes in Kashmir at altitudes as high as 3,819 m (12,530 ft). [47] Teleosts are found at extreme depths in the oceans; the hadal snailfish has been seen at a depth of 7,700 m (25,300 ft), and a related (unnamed) species has been seen at 8,145 m (26,720 ft). [48] [49]
Neocoleoidea (most living cephalopods) Coleoidea [ 1 ] [ 2 ] or Dibranchiata is one of the two subclasses of cephalopods containing all the various taxa popularly thought of as "soft-bodied" or "shell-less" (i.e. octopus , squid and cuttlefish ).
The cephalopods were once thought to have evolved from a monoplacophoran-like ancestor [8] with a curved, tapering shell, [9] and to be closely related to the gastropods (snails). [10] The similarity of the early shelled cephalopod Plectronoceras to some gastropods was used to support this view.
Neopterygii (from Greek νέος neos 'new' and πτέρυξ pteryx 'fin') is a subclass of ray-finned fish (Actinopterygii). Neopterygii includes the Holostei and the Teleostei, of which the latter comprise the vast majority of extant fishes, and over half of all living vertebrate species. [2]
Teleosteomorpha is a clade of ray-finned fishes containing all teleost fish and their closest extinct relatives. [1] Also in this group are two diverse Mesozoic fish orders, the Aspidorhynchiformes and the Pachycormiformes. [2]
A cephalopod is any member of the biological order Cephalopoda, the group that contains all squid, octopuses, and cuttlefish. This category covers articles about ...
Leptocephalus larva. A leptocephalus (meaning "slim head" [1]) is the flat and transparent larva of the eel, marine eels, and other members of the superorder Elopomorpha.This is one of the most diverse groups of teleosts, containing 801 species in 4 orders, 24 families, and 156 genera.