4-Letter Fish Starting with 'M'

A commercially important surface-dwelling fish (Coryphaena hippurus) found in offshore temperate, tropical, and subtropical waters worldwide, widely known as the dolphinfish or mahi-mahi; also refers to its meat used as seafood.

A large, heavily built, and distinctively flattened marine fish of the genus Mola (particularly Mola mola), native to temperate and tropical oceans worldwide, commonly known as the ocean sunfish.