What kind of fish is this? It was caught in a paddy field ditch and kept for more than a year. From 3 cm long to 10 cm. It will attack other fish and kill crucian carp of the same size.

This is a spotted bass. The body is oval, the head is very sharp, the upper part is concave and the lower part is convex, and the mouth can be extended to form a tubular body for swallowing food. The tail stalk is very short, almost none. The body is brown and green, covered with many leopard spots, and there is a deep Mencius spot at the bottom of the caudal fin. Average body length 15cm. This fish doesn't like swimming, but likes to lie in wait and eat. In principle, the climbing perch has an auxiliary respiratory organ and a rich vascular network on the first branchial arch. When there is no oxygen in the water, the fish will swim to the surface and breathe oxygen directly from the air. Therefore, fish will not suffocate due to lack of oxygen in the aquarium during the breeding process.

② The spotted perch is a carnivorous tropical fish, which likes to ambush and hunt living animals. They like animal feed and seldom eat pellet feed. However, it is not excluded that feed with high animal content can be accepted after feeding. It is recommended to feed live fish and worms. If it is purchased, make sure the source is clean. If these fish reproduce themselves, they can be fed with white-spotted perch nematodes and Daphnia. When fish grow up, they can also be fed to small animals, such as rice shrimp. We know that spotted perch is closely related to beta fish in China and Thailand.

There are many kinds of climbing perch, some of which can be kept as ornamental fish, such as beta fish, lily fish, Datura fish, parent fish and so on. One of the characteristics of these fish is that they have an auxiliary respiratory organ in their gills, called the suprabranchial organ, which can absorb oxygen from the air. So they can tolerate hypoxic water and usually don't die of hypoxia. (2) The living environment requires that the perch to climb must rise to the top of the water tank with vent holes, and the distance between the water temperature and the top of the water tank is 10 ~ 15cm. Create a good environment for it so that it can live and work in peace and contentment. Its food can feed fish, shrimp, insects, aquarium feed and vegetables, and can feed a variety of foods, not a single one. In addition, water quality should also be paid attention to. ?