The pure large-mouthed oysters were selected for adult fish breeding, and they should be differentiated from the soil-borne larvae at the time of purchase. The upper leaves of the caudal fins of the bigmouth larvae are longer than the lower leaves, and their body color is more transparent. They are yellow-brown and gray-yellow, with active clusters and strong foraging. However, the caudal fins of the soil pods are as long as the lower leaves, and their body color is black. Deep dark green, scattered in the pool, inactive, slow growing, individual small. The larvae of adult larvae mainly include the following types: 1. The main pond of the pond has an area of ​​5 mu or more and the water depth is 1.5 to 2.0 meters. 800 to 1000 seeds per acre, specifications for each 8 cm to 12 cm, raising 140 days to 150 days, when the average weight can be developed into more than 500 grams of commercial fish, the survival rate of 85% to 95%. Can also be used with stocking a certain number of flowers, large white fish species, put 100 to 120 per acre. Do not stock fish such as oysters, clams, and grass carp. Adult fish feedstuffs are mainly artificial compound feeds, requiring a crude protein content of 36% to 42% and a particle diameter of 3 mm to 5 mm. Wherever possible, fresh live animal feedstuffs can be fed, including various wild fish, domestic fish seedlings, tilapia larvae, animal viscera, cockroaches, fly maggots, and snail meat. The quality of these feeds is high, but the quantity is limited, which is suitable for large-scale breeding of small-scale farms or fishermen. The basic ingredients of artificial compound feed are fish meal, silkworm cocoon, blood meal, bean cake, rapeseed cake, corn, etc., plus vitamin and inorganic salt mixture. Feeding with high-quality artificial pellet feed, the feed coefficient is 2 to 2.5, takes about 150 days, and it can reach the production level of 400 kg per mu. Second, ponds set up in the small wild fish more home fish into fish ponds, broodstock ponds, Dagu pond, you can properly set up some large-mouth fish species. The amount of nesting is mainly determined by the amount of feed fish in the water area. Generally, 20 to 50 fish species with a body length of 12 cm or more can be fed per acre of water. This can reduce the main fish production, without increasing the input of feed, the end of the year can be harvested 0.5 kg to 1.5 kg, 10 kg to 25 kg per mu of largemouth bass adult fish. Raising large oysters in fish ponds at home will not affect the yield of the main fish. On the contrary, the large-mouthed oysters can eat wild fish and sick fish, which can reduce the number of fish competing for food and suppress fish diseases. The method of raising large ponds and ponds in ponds is of great significance for promotion, but it should be noted that ponds with large-sized fingerlings are not suitable for rearing big ponds in the following year depending on the type of fish culture; in addition, some water quality is too fat, drainage and irrigation are inconvenient, and family fish often floats. There are no aerator ponds or ponds with more black fish. It is not appropriate to breed large ponds.
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