Aquatic what does it mean as follows:

River, lake and sea, such as oceans, rivers, lakes produced in the economy of plants and animals or algae collectively, such as fish, shrimp, kelp and so on. Generally refers to the economic value, such as a variety of fish, shrimp, crabs, shellfish, kelp, rockweed, etc..

I. Types of culture

1. Salinity

Based on the level of salt content in the aquaculture water, it can be divided into freshwater aquaculture, seawater aquaculture, which are 2 types.

2, aquaculture waters

Based on the differences in aquaculture waters, it can be divided into pond aquaculture, paddy field aquaculture, mudflat aquaculture, reservoir aquaculture, harbor aquaculture, river aquaculture, lake aquaculture, shallow sea aquaculture and so on.

3, farming methods

Based on the differences in farming methods, it can be divided into pond farming, large water surface farming, harbor farming, mudflat farming, factory (recycled water) farming, shallow sea farming, sea ranch and so on.

Second, the main freshwater aquaculture species

1, fish

Domestic varieties: China's freshwater fishes are more than 800 kinds of fish with economic value of about 250 kinds of fishes, of which the production is higher and the types with important economic value are about 40 kinds. There are more than 40 species with high production and important economic value, as follows.

Eel, loach, carp, crucian carp, grass carp, silver carp, bighead carp, mackerel, Mandarin fish, catfish, puffer fish, Pelteobagrus fulvidraco, anchovy, beluga sturgeon, koeluga (Northwest Carp family without scales), sturgeon (Sturgeon, spoon-nosed sturgeon), section of the shrimp goby (juvenile commonly known as the spring fish), salmon (salmon), the new Taihu Lake silverfish, pomfrets, periwinkles, bream, roach, silverfish, the southern large-mouthed catfish, longnose dace, etc..

Foreign introduced species: tilapia, rainbow trout, largemouth bass, leather bearded catfish, Brazilian snapper, spotted catfish, freshwater pomfret, freshwater sharks and so on.

2, crustaceans

Mainly includes Rochester shrimp, Japanese marsh shrimp, red crayfish, South American white shrimp, Crayfish (crayfish), Chinese mitten crabs (river crabs, hairy crabs) and so on.

3, other species

Mainly goldfish, koi and other ornamental fish, as well as turtles, snapping turtles, snails, mussels, Brazilian turtles, Chinese soft-shelled turtles, broad-bodied money leeches and other special species.

Three, seawater aquaculture species

1, algae

Mainly including seaweed, kelp, branching algae, spirulina, wakame and so on.

2, shellfish

Mainly includes conch, oysters, abalone, green clams, razor clams, miscellaneous clams, clams, hair clams, blood clams, scallops, oysters, mussels, bamboo razor clams, sisal tongues, Philippine clams, four-horned clams and so on.

3, fish

Mainly including barracuda, sea bass, small yellowtail, large yellowtail, snapper, sea bream, black snapper, semi-smooth tongue trout, rockfish, halibut, eel, grouper, river puffer, horseface puffer, jumping fish (mudskipper), turbot (turbot), and so on.

4, crustaceans

Mainly including tiger crabs, three-warped pike crabs, saw-edge blue crabs, spot-jointed shrimp, pipa shrimp, lantern shrimp, Chinese shrimp (Oriental shrimp), Japanese sea-crab, Japanese shrimp, South American white shrimp and so on.

5, other species

Mainly including sea cucumbers, sea urchins, starfish, jellyfish, sea intestines and so on.