Double-bearded tongue fish is also known as arowana. The adult fish is 50-70 cm long, and the maximum length is 120 cm. It is a medium and large freshwater fish. The body was tied. The oral fissure is obviously inclined downward, and the lower jaw covers the upper jaw. The mandible has a structure similar to a nursing bag, which can be used for oral incubation of larvae.

2. the golden dragon on the back

Jinlong's habitat is located on the west side of Malaysian Peninsula, near the Kapuya River system between Kalimantan and Penang, with its center in Lake Bukit Mera and Gulun River.

3. Red-tailed arowana

Red-tailed arowana is distributed in Sumatra, Indonesia. The red-tailed arowana has beautiful golden scales from the ventral side to the fourth row. The fifth and sixth rows are not as bright as the dragon-backed arowana, high-backed arowana, high-backed golden dragon and high-backed precious arowana. The most important thing is that its pearl scales are not displayed, which is the most fundamental difference between red-tailed arowana and other arowana species.

4, armored bowback fish

The bow-backed fish is 80 ~ 90 cm long, with a wide front half, a small and pointed tail and a slightly arched back. The body is gray-black, with 3 ~ 10 black spots with white edges from beginning to end. The quantity is uncertain because of the increase or decrease of fish.

5. Jade Crown

Jade-faced crown is native to South America and belongs to local edible fish. Its whole body is covered with metallic blue, and the dorsal fin, anal fin and caudal fin are inlaid with bright red edges, which is in sharp contrast with the metallic blue of the whole body. There is a dark red sarcoma on the male fish head, like a bully wearing a crown, giving people a feeling of longevity and wealth.

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Baidu encyclopedia-armored bowback fish

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