Fish That Start With M - Page 3 of 3
Browse all aquarium fish species with common names beginning with "M". Each profile includes care requirements, water parameters, tank size recommendations, and compatibility information for freshwater, marine, and brackish species.

Munahosi cardinalfish
Ostorhinchus cheni
Think of a deepwater cardinalfish with a moody, reddish body, two slim dusky stripes, and a bold spot at the tail base. It hangs in the shadows, cruises slowly, and the male mouthbroods eggs, which is wild to watch if you ever see it happen. Super cool fish, but it comes from 70-100 m and prefers cooler marine temps, so it is definitely a specialist project.

Murray Island bandfish
Owstonia merensis
Owstonia merensis is a tiny deepwater bandfish from the western Pacific - think slope/reef-edge trawl depths, not a reef tank fish. It stays small (around 5.7 cm standard length in the literature) and lives way down where water is cool, dark, and super stable, which is why it is basically never a realistic home-aquarium species.
