What are the fish at the bottom of the sea?

1. There are colorful angelfish, glass catfish, African prince, red dragon and koi fish in the underwater world.

2, colorful angelfish: 20 cm long, nearly round, flat side, extremely short tail handle, dorsal fin and gluteal fin are symmetrical. The body is bright blue, or dark green, brown, and there are 8 evenly spaced brown-red stripes from the gill cover to the tail stalk.

3. glass catfish: belonging to loach and catfish family. This kind of fish is as transparent as glass and can clearly count the number of bones in the body, just like bone specimens, so it is called "glass catfish", also called glass cat.

4. Prince of Africa: This is a typical perch. Little cichlids, with the adult size of 10~ 12cm, are typical perciformes, with orange body color and a black stripe about 2mm wide near the dorsal fin, which is very clear and conspicuous.

5, arowana: the body length can reach 80~90 cm. Arowana lives in a small range and mainly grows in rivers in Sumatra and Kalimantan, Indonesia. Arowana, which cannot be artificially propagated, is on the verge of extinction, so it is listed as a class A protected animal by the Washington Convention, which is extremely precious.

6. koi fish: It belongs to CYPRINIDAE in biology, and there are more than 3,700 species of CYPRINIDAE 2 10 in the world. It is a kind of advanced ornamental fish popular in the world today, and has the reputation of "living gem in water" and "swimming art".