Spotfin Lionfish (Pterois antennata) ネッタイミノカサゴ have spots on their pectoral fins. They also have a membrane that connects the pectoral rays that extends to about half their length. This membrane is where their spots are. The vertical bars become disorganized toward the tail. White spot behind the pectoral fin and banded tentacles over the eyes.
This is the same Spotfin Lionfish upside down in a cave. It was a little shy, but here you can see the spots on the pectoral fins better. As with other scorpionfish the spines are venomous.