Grouper fish is one type of marine fish, which usually live in coral reefs. There are 46 species of grouper species in the world, but commonly found in Indonesian waters today are grouper of duck / mouse, mud grouper, grouper kertang, tiger grouper, grouper totol, reef grouper, sand grouper and grouper sunu. In general, groupers have the following body characteristics:
The body is flat, the body width is smaller than the length and height of the body.
Upper and lower jaws are fitted with pointed and strong teeth.Vulse wide,
upward with the lower lip slightly protruding above the upper lip. The round caudal fin, the single and elongated dorsal fin where the hard-fingered part is more or less the same as the soft fingers. The position of the abdominal fins is under the pectoral fin and the body is covered with a small fins that are scaled steroids.