The suitable fish species in rural fish ponds are grass carp, silver carp and bighead carp, engineering crucian carp, catfish and carp.

1, grass carp, grass carp is the most common fish species in daily life, and the breeding cost is low.

2. Silver carp and silver carp can purify the water, and secondly, the head of silver carp and silver carp is high in nutrients.

3, engineering crucian carp, engineering crucian carp is large in size and fast in growth. This is a kind of crucian carp that many fish farmers like to raise.

4, catfish, catfish is a carnivore, like eat small fish, this kind of fish has no bones, tastes good, and the price is higher than the previous fish.

5, carp, because carp can grow well in shallow water environment, its feeding habit is omnivorous, and it can eat weed seeds, young roots, buds, small underground stems, filamentous algae and various insects, mollusks, water worms, zooplankton and so on. In those days, the fish species went to the fields, and when the rice and grain were harvested, they could generally grow to 2-3 taels, which could be used as edible fish. At the same time, carp fry are easy to breed and have convenient sources, and farmers in many places can reproduce and raise themselves.