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Actinopterygii (/ ˌæktɪnɒptəˈrɪdʒiaɪ /; from actino- 'having rays' and Ancient Greek πτέρυξ (ptérux) 'wing, fins'), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish [2] that comprise over 50% of living vertebrate species. [3] They are so called because of their lightly built fins made of ...
The ray-finned fishes contain most of the species of fish and these are divided into 46 orders. Most of the fishes known to aquarists and anglers are within this class. **Subcategories are listed below for all 46 orders and examples of common fish in each order can be found at Actinopterygii
Acanthopterygii. Acanthopterygii (meaning "spiny finned one") is a superorder of bony fishes in the class Actinopterygii. Members of this superorder are sometimes called ray-finned fishes for the characteristic sharp, bony rays in their fins; however this name is often given to the class Actinopterygii as a whole.
Neopterygii. 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]
Bony fishes are divided into ray-finned and lobe-finned fish. Most living fish are ray-finned, an extremely diverse and abundant group consisting of over 30,000 species. It is the largest class of vertebrates in existence today, making up more than 50% of species. [13] In the distant past, lobe-finned fish were abundant; however, there are ...
Percomorpha (from Latin perca 'perch' and Ancient Greek μορφή (morphḗ) 'shape, appearance') is a large clade of ray-finned fish with more than 17 000 known species that includes the tuna, seahorses, gobies, cichlids, flatfish, wrasse, perches, anglerfish, and pufferfish.
Characteristics. Guiyu oneiros, the earliest-known bony fish, lived during the Late Silurian, 419 million years ago). [ 1] It has the combination of both ray-finned and lobe-finned features, although analysis of the totality of its features places it closer to lobe-finned fish. [ 2][ 3][ 4] Early lobe-finned fishes are bony fish with fleshy ...
Ophidiiformes / ɒˈfɪdi.ɪfɔːrmiːz / is an order of ray-finned fish that includes the cusk-eels (family Ophidiidae ), pearlfishes (family Carapidae ), viviparous brotulas (family Bythitidae ), and others. Members of this order have small heads and long slender bodies. They have either smooth scales or no scales, a long dorsal fin and an ...