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Species · Inshore

Bigmouth Sleeper

Gobiomorus dormitor

Also called Guavina.

Rules in 0 state rulebooks, checked Sep 22, 2026. Every rule names its source and the day it was last checked; the official rulebook is the final word.

Studio photograph of a Bigmouth Sleeper (Gobiomorus dormitor), side view, on a white background

How to tell it

Elongate, olive-brown sleeper to 2 ft with a huge mouth and separated dorsal fins; freshwater and brackish rivers.

Often mistaken for

One fish that gets called bigmouth sleeper, and what gives it away.

Rules for

Every state

StateSizeBagSeasonToday

Not specifically regulated in Alabama, Connecticut, Delaware, Florida (Atlantic), Florida (Gulf), Georgia, Louisiana, Maine, Maryland, Massachusetts, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Rhode Island, South Carolina, Texas, Virginia: each state’s rule for unlisted species applies there (on its page).

On the table

Edible in the Caribbean.

Related fish

Side by side: Bigmouth Sleeper vs Fat Sleeper.

In the app

Point the camera at a bigmouth sleeper and the name appears before you take the picture, with these rules for the water you’re standing in. No signal needed, and every catch goes in the log.

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Questions anglers ask about bigmouth sleeper

How do you tell bigmouth sleeper from fat sleeper?

Bigmouth Sleeper: Elongate, olive-brown sleeper to 2 ft with a huge mouth and separated dorsal fins; freshwater and brackish rivers. Fat sleeper: shorter, rounder.