CATDOLL : CATDOLL: What kind of freshwater fish is this?

This fish is called: Turtle Shell Climbing Perch, Thorny Fish, Mountain Crucian Carp, Flying Crucian Carp, Walking Fish. It is distributed in Hong Kong, Macao, Fujian, Guangdong, Hainan, Guangxi, and Yunnan Provinces. It is a native tropical fish in my country.

Carassius auratus

Appearance characteristics of crucian carp

The body of the crucian carp is laterally flattened, elongated and slightly rectangular, with fine teeth on the upper and lower jaws, a short and slightly laterally flattened tail, a fan-shaped caudal fin, gray body surface with a slight gray-green tint, covered with many black spots, the belly of the fish is slightly lighter, there is a black spot between the two strong spines of the gill cover and in the center of the base of the caudal fin, and about ten black-green horizontal stripes on the sides of the body. Its suprabranchial organs protrude from the pharyngeal branchial bones and epibranchial bones of the first branchial arch, forming bony petals that resemble flowers, and have auxiliary respiratory organs above the gills, called suprabranchial organs, which can inhale air for breathing, and can survive in oxygen-deficient mud, on shore, and in water.

The life habits of the mountain crucian carp

The mountain crucian carp can be found in water bodies that are not polluted by industrial pollution, pesticides, and fertilizers. The mountain crucian carp is a tropical fish that often hides in rice fields, ditches, gullies, streams, rivers, fish ponds and other places. In the summer, when there is frequent rain, it will swim upstream with the water flow, climb mountains and cross fields, looking for other feeding places. When it encounters danger, it will become furious and spread out all the fish bones in its body to protect itself. The body color of the fish will change due to the living environment. Some will become silver-gray, some will become yellow, and some will become dark black overall.

Predation habits of Carassius auratus

Crucian carp is an omnivorous, partially carnivorous native freshwater fish. It often preys on small aquatic animals, mole crickets, water earthworms, shrimps, insects, moths, small fish, etc. When food is scarce, it also eats duckweed, tender water plants, vegetable leaves, etc. Crucian carp often live in groups, move around and hunt in groups. When it sees food struggling on the water surface, it will rush up from the bottom of the water and eat the prey into its mouth. When it encounters food in the water, it has the habit of grabbing food in groups.

This is like a climbing perch

Climbing perch. A fish endemic to Southeast Asia.

A small Asian freshwater fish. Native to southern China, Malaysia, India and other countries. Distributed in Asia, from southeastern China to India, it is an endemic genus in Asia. There are only two species of Anabas in the world, and only one species in China, Anabas testudineus (Bloch, 1792). It is distributed in Hong Kong, Fujian, Guangdong, Guangxi, Taiwan, Macau, Hainan Island and the lower reaches of various large and small rivers in Yunnan Province and adjacent wetlands and rice fields. It is a native fish of China. It is famous for its tenacious vitality and ability to crawl on land. It was first introduced to an aquarium near London Zoo in 1870 and is a popular and famous ornamental fish overseas.