When fishing for grouper in streams, water drop-shaped or small gourd-shaped buoys should be used. Buoys No. 6 to No. 10 are the main ones. The deeper you fish, the larger the number of buoys. However, you can also choose to fish for grouper. For professional grouper buoys, if you fish in shallow water and slow currents, you can use the buoy with a short round body and a shorter target. As long as the buoy can stand firmly in the stream and the speed of the buoy is not very obvious, you can Just identify the fish signal buoy.

Grouper is the general name for fish in the subfamily Epinephelinae.

Belongs to Osteichthyes, Neopterygii, Acanthopterygii, Perciformes, Percoidei, Serranidae ).

It is a large and medium-sized warm water marine fish, widely distributed in tropical and subtropical waters. In my country, it is mainly distributed in the Taiwan Strait and the South China Sea.

Because grouper is rich in nutrients, has delicious meat, low fat, and high protein, it is considered one of the four famous fish in my country in Hong Kong and Macao, and is a must-have edible fish for high-end banquets. . It is expensive and has high economic value. It is one of the important farmed fish in coastal areas of my country and is widely farmed in China and Southeast Asian countries.

The body is generally oval or oblong, with flat sides; the head is longer than the body height; the dorsal fin spines are strong and connected to the fin rays, with 7 to 11 dorsal fin spines and 10 to 21 fin rays; The anal fin has 3 spines, the second one is usually the strongest, and the anal fin has 7 to 13 rays; the pectoral fin is wide, low, and generally round.

The pelvic fin is located below the pectoral fin; the mouth is large, and the inner teeth of the two jaws are tilted; the body is covered with small ctenoid scales; the lateral line reaches the base of the caudal fin; the caudal fin is round, truncated or concave.

Different species of grouper vary greatly in body size.

Grouper species over 30 years old can reach more than 1m in length, and very large ones can exceed 2m, such as the saddle-banded fish. Grouper (E. lanceolatus), grouper E. itajara, grouper (E. quinquefasciatus), etc.

The smaller ones are even less than 20cm, such as Cephalopholis aitha, E. tropis, C. polyspila, etc.

Epinephelus is the genus with the most species in the family Epinephelus. Its body size varies greatly, ranging from small to large; while Epinephelus, another species with more species, has The genus Cephalopholis, except C. sonnerati, are all small groupers less than 50cm in length.