The rat fish is a tropical fish. The origin of rat fish is in South America, mainly in the Amazon River basin, and this kind of fish can be found near the mainstream and tributaries of the Amazon River. This kind of fish likes to live in places with fast water flow, such as mountain streams and so on. Because this kind of fish can keep in good condition and proper amount of exercise only in places where the water flow is relatively large and strong.

This fish needs a lot of exercise to consume too much energy in the body, otherwise it will get sick because it is too fat. The most suitable water temperature for them is about 22-25 ℃, and it is best to raise them with neutral water. Moreover, they prefer old water, and new water will make them more prone to skin diseases.

The rat fish is a freshwater fish. Ratfish are mainly produced in the main and tributaries of Amazon River, and the species of this fish are different in different river basins. This kind of fish mainly lives in the waters with rapid water flow, most of which like to gather in the middle and lower reaches with gentle water flow, and a few like to live in the upper reaches of the river. Therefore, when raising them, they should be provided with strong water flow as much as possible. For family breeding, it is necessary to use wave makers to create a fast-flowing environment for them.

This kind of fish is mild by nature, easy to raise, can be mixed with many tropical fish, and prefers neutral water quality. Under normal circumstances, they like to swim under the water, and sometimes they will surface and dive to the bottom quickly. This fish also likes to eat the food at the bottom of the water tank.