Freshwater sombrero: a desalination species of the fish, the green striped marlin, which originates from the coastal activities of eastern Malaysia.
The freshwater sauger, belonging to the family Romeridae, the Chinese name freshwater wrasse, is a valuable freshwater aquaculture of marine fish, mainly growing in the temperate zones of the sea, close to the reefs and coral between the activities of China's South China Sea is the main production area. Its distribution is most in the Southeast Asian waters, especially in Malaysia and Indonesia's eastern coast. Lives in the sea with rocky reefs and coral reefs.
Typical features: freshwater sauger is laterally compressed, with a high dorsal fin, long pectoral fins, small phosphorus, greenish body color, creamy white abdomen, and greenish-gray vertical lines on the side of the body. It prefers high temperature and tolerates low oxygen, and can live in sea water and fresh water with a salinity of 3C and a temperature range of 7-35C. Omnivorous, adult fish like to eat plankton, benthic organisms, strong food grabbing, rapid growth, male fish growth rate is greater than that of female fish. -The growth rate of males is faster than that of females. Under normal circumstances, the sexual maturity period is 2-3 years.
Ecological Habits:Mainly found on treacherous outer reef slopes, channel slopes and lagoon reefs. Usually solitary, but may occur in pairs. Juveniles are found in areas of the lagoon where coral reefs thrive. Adults spend the daytime cruising among the reefs, and at night roost in reef caves and under coral ledges. Their diet consists of mollusks, fish, sea urchins, crustaceans and other invertebrates.
The sauger is found in Oceania, the tropical western Pacific, the Great Barrier Reef, the northwestern Indian Ocean, and the Red Sea. The body is greenish-blue
Fry cultivation and adult fish breeding 1, pond preparation: the area of 3-5 acres is appropriate, the bottom of the pond is flat. 10 days before stocking, per mu of 60-70 kg of quicklime sprinkled pond disinfection. 2-3 days later, per mu of bio-fertilizer or pig manure and other farmyard fertilizer 75-100 kg, water injection to one meter, the water color into a tea-brown or oil-green can be placed after the fish fry.
2, fish stocking and matching: the southern region to the middle and late April, when the temperature rebound stable (water temperature above 18C) when the release of seedlings. Can also be paired with a small amount of crucian carp
3, pre-feeding: after the release of the fry, soaked peanut or rapeseed cake and other mixing, along the edge of the pond to the center of the splash of wine, per mu per day according to the 1.5-2 pounds of feeding. After a month of breeding, the fish fry can grow to about 10 centimeters, weight 10-12 grams of specifications.
4, mid and late management
(1) feed feeding: freshwater sauger grows at a temperature of 22 - 32C, with a strong appetite. Feeding range should be wide, as far as possible, so that all species of fish balanced intake. Feed more than 35 protein compound feed, - day feeding twice, 9: 00-10: 00 a.m., 4: 00-5: 00 p.m. Daily bait: weight 10-20 grams, 5-7%; 20-50 grams, 4-6%: 50-100 grams, 3-5%; 100-200 grams, 2-4%: 200 grams or more, for the fish weight of about 2%.
(2) water quality control: in mid-May to June can gradually increase the water to 1.5 meters, July and August is the high temperature season, increase the water to about 1. 8 meters, the best conditions every two weeks to change the water, to keep the water fresh, to prevent the phenomenon of flooding.
(3) fish disease control: adhere to the principle of prevention and control, every half a month available bleach 1ppm or quicklime 20kg/mu whole pool splash wine. When there are signs of fish disease, antimicrobials and vitamins can be used to feed the bait for 3-5 days.