Sequoia is a marine fish. Sequoia, also known as goldfish. Local names, red three fish, red brother carp, hanging three fish, dragging three fish, melon three fish, yellow-bellied golden thread fish, golden thread fish, six-toothed golden thread fish. A fish of the family odontidae. Cantonese is called red three fish, also known as red three fish or golden thread rowing. This fish is called it because it has a golden longitudinal stripe in the center of its body. Mainly distributed in tropical and subtropical areas of Indian Ocean and western Pacific Ocean. China is mainly distributed in the South China Sea.

It has a long body, flat sides, and thick and blunt back and belly edges. Generally, the body length 19 to 3 1 cm and the body weight 100 to 500g. The eyes are big, the lips are thick, the kiss is blunt and sharp, the mouth is slightly inclined, and there is no scale in front of the head. The forehead is covered with three rows of scales. The pectoral fin is very long. The caudal fin is bifurcated, and the upper leaves of the caudal fin do not extend into filaments. There are two light blue longitudinal bands and five to six light yellow longitudinal bands on the side.

The dorsal fin is red and the edge is yellow. The anal fin is white with yellow stripes in the middle. The tail fin is red and the tip is yellow. The fish trawled in Guangdong, Guangxi, Hainan and Taiwan Province provinces, commonly known as Hongsanhe and Guasan, are important economic fish in the South China Sea. Fish is abundant and has high edible value. It can be refrigerated, salted and dried.