Gag Grouper Identification Guide

Key identification features

• Elongate, moderately compressed body colored gray to brown with dark, wavy or worm-like markings
• Markings often form irregular streaks or blotches that create a mottled, camouflaged look
• Pointed pectoral fins, unlike the more rounded fins of many other groupers
• Tail margin is straight to slightly concave in adults, sometimes appearing squared
• Dark bar or smudge frequently visible beneath the eye

Common look-alikes

• Black grouper: has a squarer tail and rows of brassy or bronze spots rather than gag's wavy dark streaks.
• Scamp: covered in small, well-defined dark spots instead of worm-like markings, and mature adults develop elongated, ragged tail filaments that gag never show.
• Yellowfin grouper: sports a bright yellow edge on the pectoral fin, a feature gag grouper completely lack.

Where you'll see one

Gag grouper inhabit reefs, rocky ledges, and grass flats in the Western Atlantic and Gulf of Mexico, with juveniles common in shallow estuarine grass beds and adults moving to deeper offshore structure as they mature.