Actinopterygii, commonly known as ray-finned fish, are a group of bony fish characterized by their fins, which are webs of skin supported by bony or horny spines. They have a streamlined body shape and are found in a variety of habitats, from shallow coastal waters to deep oceans. They range in size from the tiny pygmy goby to the giant whale shark. The lifespan of Actinopterygii varies greatly, from a few months to several decades. The current population of Actinopterygii is estimated to be around 32,000 species.
Name Origin: The name Actinopterygii is derived from the Greek words "aktis" meaning "ray" and "ptéryx" meaning "wing". This is in reference to the fins of the organisms in this group, which are composed of webs of skin supported by bony or horny spines. This group of organisms includes ray-finned fishes, which are the most diverse group of vertebrates in the world.
Related Species: Amia calva, Ammocrypta pellucida, Ammocryptocharax geryi, Ammocryptocharax kennedyi, Ammocryptocharax maculatus, Ammocryptocharax modestus, Ammocryptocharax parvulus, Ammocryptocharax rheocharis, Ammocryptocharax tigrinus, Ammocryptocharax viviparus