Threespot Damselfish

Stegastes planifrons

Threespot Damselfish is a small reef damselfish of the tropical western Atlantic, best known for defending algal gardens on shallow reefs. It is not a major game fish; anglers encounter it mostly while reef fishing or collecting bait near coral heads.

Saltwater

Threespot Damselfish reference image — Andy Blackledge, cc-by, via Wikimedia Commons. Source: Wikimedia Commons.

Identification points

Small, deep-bodied damselfish with a steep forehead and rounded tail
Prominent dark spot at the rear of the dorsal fin and another on the caudal peduncle, giving the 'threespot' pattern
Usually yellow-brown to olive with a darker midbody band and pale blue facial markings in adults

Habitat

Shallow coral reefs, patch reefs, and reef flats with abundant live coral and turf algae; commonly stays close to shelter in the Caribbean and western Atlantic.

Bait notes

Not a targeted angling species. Small pieces of shrimp, squid, or worm on tiny hooks can catch it incidentally; very small reef jigs or flies may also draw strikes.

Behavior

Highly territorial and aggressive for its size, often chasing intruders from a small algal patch. It grazes on benthic algae and detritus and rarely roams far from cover.

Caution

Sharp reef habitat can cause cuts and punctures; avoid stepping or reaching into coral. Not known as a food fish and is too small to target for consumption.

Fishing notes

If pursued at all, use ultra-light tackle, tiny hooks, and short casts near reef structure. Handle carefully and release quickly; it is more of an incidental reef bycatch than a sport fish.