Blue Ocean Institute


Some problems exist with this species' status or catch methods, or information is insufficient for evaluating. Grouper, Black – US These fish contain levels of mercury or PCBs that may pose a health risk to adults and children.

In the U.S., Black Grouper are found from Massachusetts to Texas but the majority of Black Grouper are caught in South Florida, specifically the Florida Keys.

Black grouper are caught using handlines and bottom longlines, which typically cause a moderate amount of damage to bottom habitat and catch moderate levels of bycatch. New management measures that will reduce interactions with sea turtles and other protected species have recently been put into place.

Black Grouper can grow to 220 lbs. and change sex from female to male after 15 years. They have healthy levels of abundance throughout their range in the U.S. south Atlantic and Gulf of Mexico.

Full species report here.

This fish may have high levels of mercury that could pose a health risk to adults and children.  More info here about mercury in grouper. Check out our mercury in seafood section.