What phylum and class are clownfish?

Clownfish belong to the phylum Chordata and the class Actinopterygii.

Actinopterygii, commonly known as ray-finned fishes, constitute the largest class of vertebrates, with over 30,000 known species. These fishes are characterized by their bony fin rays, supported by bony spines. Ray-finned fishes exhibit diverse adaptations for various habitats, including marine, freshwater, and even some amphibious environments. Clownfish fall under this class due to their possession of bony fin rays.

Chordata is a phylum that encompasses animals with a notochord, a dorsal nerve cord, pharyngeal slits, and a post-anal tail during at least one stage of their life cycle. This phylum includes vertebrates, such as fish, amphibians, reptiles, birds, and mammals, as well as various invertebrate groups.