A fossilized fish with double wolf fins. The skeleton of the fish body is complete, the details are clear, the surrounding rocks are natural, and there are no traces of artificial modification. It is in good preservation condition. Size: Board length 15.5cm, board width 10cm; single fish length 6.2cm. Wolf-finned fish is a freshwater fish widely distributed in East Asia during the Cretaceous period. This type of fossil is preserved in shale strata, which completely records the skeletal structure of prehistoric fish and provides an important basis for studying the freshwater ecological environment of the Cretaceous period. Specimens of both fishes on the same plate are rare