Freshwater fish are categorized into a variety of species such as aquatic plants, omnivores, plankton feeders, mild carnivores and others.

1, water plants as the main food category: grass carp, bream, pomfrets, trout and so on.

2. Plankton feeders: silver carp, bighead carp and others.

3, omnivorous category: carp, crucian carp, etc..

4, carnivorous fish with mild temperament: warblebite bleak, Mongolian bleak and mackerel, etc.

5, other categories: wheat fish, Darwin's snake, silver catfish, striped bass, rod fish, eel, eel, loach, loach, catfish, as well as common fierce fish snakeheads, Mandarin fish, Gan and so on.

Expanded information:

Freshwater fish structure

Fin plays the role of the fish swimming There are five types of fins: pectoral, ventral, dorsal, anal and caudal.

Pectoral and ventral fins: help to change direction, stop swimming and maintain balance. Some are very special: the pectoral fins of the mudskipper can support the body and even act as legs to walk on.

Dorsal and anal fins: maintain balance and reduce drag.

The caudal fin: generates forward momentum.