Aquaculture is divided into freshwater aquaculture and seawater aquaculture. Mariculture: fish, shrimp, shellfish and algae living in seawater are placed in an artificially simulated survival and reproduction environment for artificial seedling raising or wild seeds are collected for artificial reproduction. Freshwater culture: including pond culture, mountain pond reservoir, river culture, culvert culture, cage culture and high-density flowing water culture.

Aquaculture is a general term for marine aquaculture and freshwater aquaculture.

I. Freshwater culture

1. Pond culture: it belongs to intensive culture and high-yield culture mode. There are many kinds of fish, and the stocking density is higher than that of Shantang Reservoir. In the process of cultivation, it is mainly artificial feeding.

2. Farming in Shantang Reservoir and Creek: It belongs to extensive farming. Since 1980s, small-scale Shantang reservoirs and streams have also begun to adopt intensive farming and artificial feeding.

3. Culvert culture: 100_ Family-style fish culture with flowing water from culverts.

4. Cage culture: It is a way of high-density fish culture by using water bodies such as Shantang Reservoir, rivers and amber to make several cubes or dozens of cubes with nets and boards.

5. High-density flowing water culture: the way to develop high-density intensive fish culture by using pool water with a certain flowing water elevation.

Two. Marine biological culture

Marine aquaculture is an industry that uses artificial facilities to simulate the survival and reproduction environment of fish, shrimp, shellfish and algae living in seawater, and artificially raises seedlings or collects wild fry for artificial breeding.

General situation of freshwater aquaculture varieties

At present, the species of freshwater aquaculture include fish, shrimp, amphibians, aquatic animals, aquatic plants, reptiles and so on.

Fish: including tropical fish, warm water fish and cold water fish.

1. Tropical fish: tilapia, sunfish, freshwater sand fish, Brazilian snapper, freshwater pomfret, shad, wheat shad, wild shad, Egyptian pond lice fish, etc.

2. Warm-water fish: mandarin fish, silver carp, herring, carp, hybrid carp, crucian carp, koi fish, northeast crucian carp, Jiazhou perch, pouting red _, Xiangyun crucian carp, Guangdong snapper, Pengze crucian carp, pond lice fish, spotted fork tail _, cloud spot _, _ fish and inverted fish.

3. Cold water fish: sturgeon, sturgeon schrenckii, Russian sturgeon, rainbow sturgeon, Russian frog, etc.

2. Shrimp: mainly green shrimp, freshwater lobster and Macrobrachium rosenbergii.

Third, reptiles: mainly water fish, mountain Rui and so on.

Amphibians: mainly frogs, tiger skin frogs, American bullfrogs, Thai frogs, Echinothorax frogs and so on.

5. Aquatic plants: mainly water chestnut and algae.