![]() There is a dark line above the rear of the upper jaw. The pectoral fins have dark coloured rays with pale membranes between them and a whitish margin. The margin of the spiny part of the dorsal fin and the inside of the mouth and along the outer margin of the rear part of the jaws is yellow. In some fish the body is marked with irregular dark bars. The adults are pale brownish-grey in background colour marked with closely set small brown spots on the dorsal half of the head and body. The dorsal fin has a pointed rear margin while the anal fin has a pointed margin at its lower posterior edge in adults. The dorsal fin contains 11 spines and 16-18 soft rays while the anal fin contains 3 spines and 10-12 soft rays. The preopercle is angular and has an obvious lobe at its angle, this lobe has enlarged serrations, there is a clear incision in the preopercle above this lobe. It standard length is 3.0 to 3.4 times its depth. Mycteropreca insterstitialis has an elongate, robust and compressed body which is no deeper at the origin of the dorsal fin than it as the origin of the anal fin. It is a fairly large fish and it gets its name from the yellow around its mouth. It is found in the Caribbean and in the tropical waters of the Atlantic Ocean. The yellowmouth grouper ( Mycteroperca interstitialis), also known as the crossband rockfish, grey mannock, hamlet, harlequin rockfish, princess rockfish, rockfish, salmon grouper, salmon rock fish or scamp, is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the family Serranidae, which also includes the anthias and sea basses. Mycteroperca roquensis MartÃn Salazar, 1956.
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