1. WWC2 is conserved in some Actinopterygii, Gastropoda, and Bivalvia. 2. Ray-finned fishes are a class of bony fishes called Actinopterygii. 3. Most bony fish belong to the ray-finned fish ( Actinopterygii ). 4. This Actinopterygii article has a helpful taxonomical list that can be a good tool. 5. Perciformes is in the Actinopterygii class, which, is in the Pisces superclass. 6. Pseudophycis " breviuscula " falls under the ray-finned fish class Actinopterygii. 7. Rafinesque 1810 ( Actinopterygii : Syngnathiformes ) : Taxonomy and biogeography with recommendations for further research. 8. Mammals are shown to have greater similarity, while aquatic vertebrates such as actinopterygii / chondrichthyes have lesser similarity. 9. Carroll 1988 ) recognises teleost fishes as a Division Teleostei within Class Actinopterygii ( the ray-finned fishes ). 10. The extant ray-finned fishes of the subclass Actinopterygii include 42 orders, 431 families and over 23, 000 species.