rat fish eat dead fish. Because rats and fish can clean up the food residues in the fish tank, thus achieving the function of cleaning the fish tank. Therefore, they may eat dead small fish and shrimp in the fish tank. They live at the bottom of the fish tank, and can also eat the food residues that sink to the bottom of the water to clean the fish tank.

However, it should be noted that breeders should feed them regularly to avoid malnutrition. Generally speaking, it is enough to feed regularly two or three times a week. Although they can eat dead fish in the fish tank, they still need to change the water regularly, once a week. Otherwise, they may irritate their skin due to sudden changes in water quality and environment, thus increasing their risk of skin diseases.

Rats and fish eat fish feces. Because rat fish have the function of cleaning fish tanks, they like to eat fish feces. At the same time, the digestive system of most fish is not very good. Therefore, their feces will also smell like food. The smell of food can make them eat the feces of other fish again.

Do not change water too often when raising rodents and fish, because changing water too often may increase the risk of skin diseases. In order to make their nutrition intake more comprehensive and sufficient, the breeder should feed them regularly, two to three times a week.