Black Grouper: Mycteroperca bonaci


  • Color olive or gray with rectangular black blotches and brassy spots
  • Bottom of preopercle (cheek) is gently-rounded
  • Second dorsal, anal and caudal fins black on outer third part of fin
  • Pale yellow or white margin on pectoral fins

Similar Species: Gag, M. microlepis (spur on preopercle is serrated); and yellowfin grouper, M. venenosa (pectoral fins trimmed in bright yellow)

Size: Up to 48 inches (180 pounds); common to 40 pounds



Coastal waters near structure. Juveniles can be found inshore. Adults are associated with rocky bottoms, reef, and drop off walls in water over 60 feet deep. 


Spawn between May and August.

They are protogynous hermaphrodites, meaning that young predominantly female who transform into males as they grow larger. 

Larger individuals of this species are generally found in greater depths and they feed on fish and squid.

Additional Information

State Record:External Website 113 lb 6 oz, caught near the Dry Tortugas

Fishing Tips and Facts: Grouper fishing from a boat typically involves baits fished near the bottom, with heavy tackle and heavier to bring grouper to the surface. Live fish or dead cut or whole bait are used. Grouper are very tasty meals.

Recreational Regulations

Image Credit: © Diane Rome Peebles

FWC Facts:
Approximately 1.7 million acres of Florida's remaining natural areas have been invaded by nonindigenous plant species, which have degraded and diminished our ecosystem.

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