Small fish species in freshwater rivers include red-eye trout, white minnow, yellowtail catfish, dinky catfish, and carp.

1, red-eye trout

Red-eye trout is a fish in the carp family, also known as trout, red-eye fish, ginseng fish, presenting a long cylindrical shape, with a rounded abdomen and a flat posterior side, with a silvery-white body color and a dark grey abdomen, which belongs to the high-quality freshwater economic fish, which is fast-growing, adaptable, and heterogeneous in its diet, feeding on algae, organic debris, and aquatic plants.

2, white minnow

White minnow, also known as white fish, green scales, snapper fish, anti-striped, belonging to a small carnivorous fish, the body length of about 20 cm, the body type of the lateral compression, the head of the pointed, triangular, mainly in the middle and upper regions of the water, spring, summer and autumn season, like the distribution of clusters, mainly to aquatic insects, plankton for food.

3, yellowtail catfish

Yellowtail catfish

Yellowtail catfish, also known as yellowtail, yellow slice, yellow fish, yellow auntie, is a small and medium-sized freshwater fish, long and slender body and side flat, gray back, white abdomen, caudal fins are orange, and yellowtail catfish to plant debris, humus, algae for food, strong oxygen tolerance, mainly living in the middle and lower waters.

4, dingui fish

Dingui fish, also known as the doctor fish, is widely distributed in Eurasia, a fish, living in slow-flowing freshwater, the body surface of the four colors of green, yellow, blue, white, more as an ornamental fish breeding, but the fishing of the dingui fish will become black, ornamental reduced, known as the black fish.

5, carp

Carp is the carp family of carp fish, native to Asia, the kissing bone is developed, will use the kissing bone to arch the mud for food, and carp is a low level of warmer animals, according to the change in water temperature to change the temperature of the body, the amount of intake is small, intestinal tract is small, metabolism is faster.