Actinopterygii or the ray finned bony fishes are the dominant class of not only fish, but of vertebrates with an estimated 30000 species. Since you didn't ask specifically I've given you a pretty general answer. Actinopterygii contain many orders and classes of fish.
Domain Eukarya Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrae Class: Actinopterygii Genus Perca Species Perca flavescens
Ray-finned fishes (Actinopterygii)
The taxonomy of a seahorse is as follows: Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Syngnathiformes Family: Syngnathidae Genus: Hippocampus Species: Varies depending on the specific seahorse species
Actinopterygii, or ray-finned fishes, typically have two main openings behind the eye socket: the optic foramen, which allows the optic nerve to pass through, and the postorbital fenestra, which can vary in presence and size depending on the species. Additionally, some species may have other small foramina associated with blood vessels or nerves. Overall, the exact number can vary among different species within this diverse group.
Reedfishes, sturgeons, herrings, cods, flatfishes etc are members of actinopterygii.
Kingdom: Animalia Phylum: Cordata Class: Actinopterygii Order: Scorpaenidae Subfamily: Pteroinae Genus: Pterois Species: volitans
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Beloniformes Family: Chanidae Genus: Chanos Species: Chanos chanos
Actinopterygii
To avoid you having to ask for more. :- The Class for Tuna is "Actinopterygii". Its Order is "Perciformes" the Family is "Scombridae". and the Species is "Thunus".
actinopterygii
Scientific classification Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Cypriniformes Family: Cyprinidae Genus: Cyprinus Species: C. carpio