The Takifugu Obscurus is commonly known as the river. Is a bony fish skeleton, morphomorpha, family, Oriental genus. There are benthic fish that have sea turtles. The river has a delicious taste, rich nutrition, and a low fat content. The river toxin (TTX) extracted from toxic parts of the body is a natural advanced anesthetic with extremely high medical value. At present, the international market price is as high as 50,000 US dollars per gram, artificial commodity river fish is 270-360 yuan per kilogram, and wild individual commodities are 1,000-2,000 yuan kg. Therefore, the artificial cultivation of river fish is an effective foreign exchange earning for fishery professionals. The preferred variety. First, the biological characteristics of the river fish The river fish is a warm water-based benthic fish of the Haijiang River. Under natural conditions, the carnivorous omnivorous fishes, fish rotifers, cladocerans, fish Classes, etc.; juvenile fish and adult food shrimp, crabs, snails, fish fry, aquatic insects, etc., also eat plant leaves and filamentous algae. After artificial taming, edible fodder can be eaten. River fish are sexually mature for 2-3 years and breed from March to May each year. For one-time spawning, egg stickiness, fertilized eggs hatch 5-7 days. Second, feeding and management 1, fry cultivation: the breeding ponds in the stocking before the use of quicklime or bleaching powder for thorough disinfection of ponds, one week after the water and apply enough base fertilizer. Water quality requirements PH7-8.2, dissolved oxygen 5mg / L or more. Stocking densities: 1000-2000 tails per year. After 15-20 days of cultivation, the animals were reared in separate ponds; 6-8 points, 500 tails/day. During the cultivation period, it is appropriate to inject new water. Normally, the water depth is 1 meter. If the plankton in the pool can not meet the needs of its fry, it may be fed with appropriate egg yolk or soybean milk. 2. Adult fish breeding: Choose 1-5 mu of water surface with a water depth of 2 meters or more, and thoroughly disinfect the pond with lime or bleach before stocking. The stocking density is 1000-2000 tails per acre, and 500-1000 tails per acre are more than 250 grams. Daily feeding 2 times. 3, fish disease: common common small melon insects, oblique camp insects, gill disease, enteritis disease, fulminant fish disease and liver linear hemorrhage, water mold disease. In addition, during the cultivation of river fish, we found that the species is very sensitive to the time and dose of common drugs. Therefore, in the prevention and treatment, the dose of medication must be careful.
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