noun a class of fish characterized by bony rays in their fins
Actinopterygii is a class of ray-finned fish, which includes most of the familiar fish species such as trout, bass, and salmon.
Actinopterygii are believed to have evolved during the Devonian period, around 416 million years ago.
Actinopterygii are characterized by their bony rays in their fins, which provide support and structure for swimming.
Actinopterygii are the most diverse group of fish, with over 30,000 species identified.
Actinopterygii is a class of ray-finned fishes that includes the majority of fish species.
Actinopterygii is a diverse group of fish with bony rays supporting their fins.
Actinopterygii are an important group of fish in marine ecosystems.