The Queen Triggerfish comes from the reefs of the Caribbean Ocean, and is a very striking fish that will add a new dimension of color and shape to the large marine fish only aquarium. They are triangularly shaped, and are mostly yellow and green, with an interesting pattern of lines circling their eyes. Their fins are blue to purple in color and the tail is forked. The queen triggerfish is a large oval-shaped, laterally-compressed fish with small eyes located toward the top of the head. The anterior dorsal fin possesses two spines used to lock the fish into a crevice during the night. The first one locks and the second spine unlocks. This prevents predators from pulling them free or swallowing the fish and is responsible for the common name, "triggerfish". In addition, queen triggerfish have special membranes located just posterior to the pectoral fins which are used to produce a throbbing sound that is audible to most other fish as a warning to stay away. The posterior dorsal fin is large and triangular while the caudal fin is crescent-shaped. The upper and lower rays of the caudal fin exist as long trailing filaments. It is capable of moving its eyes independent of each other. The sexes have similar morphology and coloration while juveniles often have shorter fins and are paler in color than the adults. Dorsal spines (total): 3; Dorsal soft rays (total): 29-32; Anal spines: 0; Anal soft rays: 27 - 29. Greenish or bluish gray on back, orange-yellow on lower part of head and abdomen, with two broad diagonal curved bright blue bands running from snout to below and in front of pectoral fins, the lowermost continuous with a blue ring around lips; a broad blue bar across caudal peduncle, and blue sub-marginal bands in median fins