Royal Gramma

Gramma loreto

Royal Gramma is a small Caribbean reef basslet prized for its vivid purple front half and yellow rear half. It lives close to rocky caves and coral ledges, where it picks small zooplankton from the water column and defends a tight shelter.

Saltwater

Royal Gramma reference image — Cliff from Arlington, Virginia, USA, cc-by, via Wikimedia Commons. Source: Wikimedia Commons.

Identification points

Bright purple to violet front half with a sharp transition to yellow/orange rear half
Elongate basslet body with a long continuous dorsal fin
Small mouth and large eye; usually seen hovering near cave entrances or reef crevices

Habitat

Shallow coral reefs, rocky ledges, and crevices; usually under overhangs or inside caves from the surf zone to moderate reef depths in the western Atlantic/Caribbean.

Bait notes

Not a practical angling target; mostly taken in aquaria and not targeted by sport fishers. In captivity it accepts tiny meaty foods such as mysis, brine shrimp, copepods, and finely chopped seafood.

Behavior

A secretive reef dweller that hovers upside down or head-down near shelter, darting out to grab tiny drifting prey. It is territorial around its cave and often retreats quickly when disturbed.

Caution

Reef-associated species; no major human consumption role. Avoid collecting from protected reef habitats and check local marine aquarium collection rules.

Fishing notes

If encountered while reef fishing, use very light tackle and tiny hooks with small pieces of shrimp or baitfish, but release promptly. It is far more of an ornamental reef species than a gamefish.