Clear water fish are fish raised in clear water. There are many kinds of fish. As long as they live in the same clear water environment, no matter big fish, small fish, fish with scales or without scales, they are collectively called clear water fish. Clear water fish are not polluted, generally live in clean mountain spring water and feed on aquatic plants and microorganisms. Freshwater fish live in water of about 4 degrees, with a growth cycle of 3-4 years and a length of about 2-3 kilograms.