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ISC DIVER
Top 50 Dive Sites

Yellowmouth Grouper

Mycteroperca interstitialis

Rank
Species
Dive sites
1 site

The yellowmouth grouper inhabits rocky reefs and drop-offs across the western Atlantic, typically at depths between 20 and 100 metres. A robust, stocky grouper, it is identifiable by its dusky body and the distinctive yellow-orange colouration inside its mouth — visible when the fish yawns or feeds. Like other groupers, it is a solitary ambush predator, lying in wait among rocks and coral crevices before striking at passing prey with explosive speed.

Most likely to be seen at

Sites where its range and habitat make it likely — not yet confirmed by a logged sighting.