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Actinopterygii (/ ˌ æ k t ɪ n ɒ p t ə ˈ r ɪ dʒ i aɪ /; from Ancient Greek ἀκτίς (aktis) 'having rays' and 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]
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.
Fish portal; Actinopteri (/ æ k t ɪ ˈ n ɒ p t ə r aɪ /) is the sister group of Cladistia in the class Actinopterygii (ray-finned fish).. Dating back to the Permian period, the Actinopteri comprise the Chondrostei (sturgeons and paddlefish), the Holostei (bowfins and gars), and the teleosts; in other words, all extant ray-finned fish other than the bichirs.
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
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]
Illiniichthys is an extinct genus of ray-finned fish that lived during the late Moscovian stage of the Pennsylvanian epoch in what is now Illinois, United States. [2] [1] Fossils were collected from the Mazon Creek fossil beds. The genus is named after the Illini Native American tribe. [2]
Mississippian Actinopterygii (1 C) This page was last edited on 21 November 2024, at 19:38 (UTC). Text is available under the Creative Commons Attribution ...
They have a long dorsal fin which contains 17 or 18 spines and 24 to 27 soft rays while the anal fin with 3 robust spines, the middle one being the most robust, and 12 soft rays. The pectoral fins have 15 or 16 rays, of which the lowest 6 or 7 are robust, simple and extended, one of the two uppermost rays are very robust and longer than the ...