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Species · Lookalikes

Atlantic MoonfishorLookdown

Two fish anglers mix up. Here is what separates them, and what each one’s rules are in your state.

Studio photograph of an Atlantic Moonfish (Selene setapinnis), side view, on a white background
Atlantic MoonfishSelene setapinnis
No picture yet
LookdownSelene vomer

Rules for both fish from 1 state rulebooks, checked Sep 18, 2026. Every rule names its source and the day it was last checked; the official rulebook is the final word.

How to tell them apart

Atlantic Moonfish

A vertical silver dish with a steep face and thin body; no trailing streamers.

Lookdown

Vertical chrome dinner plate with a high forehead.

Lookdown, next to Atlantic moonfish: long dorsal and anal streamers, flatter forehead.

Side by side

Atlantic MoonfishLookdown
Scientific nameSelene setapinnisSelene vomer
Also called
WatersInshoreInshore
Heaviest state record1 lb 14.38 oz · Mississippi (2006)4.2 lb · Texas (2012)
On the tableThin but tasty panfish.Good, thin fillets.
Rules of its own in1 states0 states

Rules for

Every state, both fish

The two fish are regulated differently in 1 of 1 states with a rule for either. In North Carolina, Atlantic moonfish is No size limit, No bag limit while lookdown has no rule of its own there. Call the fish wrong and you keep a short one or throw back a legal one.

StateAtlantic Moonfish: size · bag · seasonLookdown: size · bag · season
North CarolinaNo size limitNo bag limitOpen year-roundOpenNC DMF 2026 · checked Not specifically regulated; the state’s default for unlisted species applies.

In the app

Point the camera at the fish and Chum names it before you take the picture, Atlantic moonfish or lookdown, with the right rules for the water you’re standing in. No signal needed.

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Questions anglers ask

How do you tell Atlantic moonfish from lookdown?

Atlantic Moonfish: A vertical silver dish with a steep face and thin body; no trailing streamers. Lookdown: Vertical chrome dinner plate with a high forehead. Lookdown, next to Atlantic moonfish: long dorsal and anal streamers, flatter forehead.

Which gets bigger, Atlantic moonfish or lookdown?

Lookdown. The heaviest state record we hold is 4.2 lb in Texas; the heaviest Atlantic moonfish record is 1 lb 14.38 oz in Mississippi.

Which is better to eat, Atlantic moonfish or lookdown?

Atlantic Moonfish: Thin but tasty panfish. Lookdown: Good, thin fillets.

Do Atlantic moonfish and lookdown have the same limits?

Not everywhere. They differ in 1 state rulebooks. North Carolina: Atlantic moonfish No size limit, No bag limit, lookdown no rule of its own.