👉 Rhipidion is a type of fish in the order Chondrichthyes, also known as ray-finned fishes. It is classified into two main groups: the "rhytidiform" and the "spiny". The Rhipidion group includes the more commonly known species like the common rhytidarian (Rhipicephala) and the spiny sturgeon (Cyprinidae). The other type of ray-finned fish, the "spon
