Artificial seedling raising method for outdoor ecological pond of Cromileptes altivelis with high survival rate

Abstract

The invention provides an artificial seedling raising method for an outdoor ecological pond of Cromileptes altivelis with a high survival rate. The artificial seedling raising method comprises the following steps of step (1), preparation of a seedling raising pond; step (2), treatment of newly-hatched fish fries before entering the pond; step (3), slowly putting the newly-hatched fish fries, the density is 10000 to 10500 / m3, the fish fries is 10 to 30 days old, feeding copepodid larvae, and adding 0.02 to 0.04mg / L mixed bait of betaine and memhaden meal; and feeding frozen shrimp meat paste and compound feed during 30 days old to the end of seedling raising; step (4), water quality regulation; performing seedling raising for 6 to 10 days, and adjusting the pond water depth to be 2.0 to 2.3m; performing seedling raising for 11 to 20 days, replacing 4 to 10% of filtered seawater every day and adjusting the salinity to be 28 to 32; and performing seedling raising for 21 days until the endof the seedling raising, and adjusting the salinity to be 27 to 30; and step (5), performing seedling emergence. According to the artificial seedling raising method for the outdoor ecological pond ofthe Cromileptes altivelis with the high survival rate provided by the invention, the survival rate and the growth quality of the fish fries are greatly improved, and an important basis is provided for the artificial breeding of the high-quality and high-efficiency Cromileptes altivelis in the later period.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for artificially cultivating humpback perch in an outdoor ecological pond with a high survival rate. Background technique [0002] Humpback perch (Cromilept saltivelis), commonly known as mouse spot, Guanyin carp, squid, and sharp-headed grouper; it is a tropical seawater reef fish, and its main distribution areas are the Indian Ocean, the coastal areas of Africa and the Western Pacific, the South my country Sea and the Taiwan Strait of China and Hong Kong waters are distributed. Humpback perch generally inhabits calm lagoon areas or coral reef waters with good water quality, at a water depth of about 15m. The juveniles are bright in color and can be used as ornamental fish. When they are adults, they taste delicious and are very high-grade food fish. [0003] At present, most of the humpbacked perch come from sea fishing, and there are few researches on the reprodu...

AI Technical Summary

Problems solved by technology

In the breeding process of humpback perch, the following problems often occur: larvae and juveniles are weak, have poor vitality, and are easy to be frightened and die. A large area of ​​disease occurred, which eventually led to an extremely low survival rate of humpbacked perch seedlings. The survival rate of existing seedlings > 30 days is only about 4%. , The method of artificial breeding of juveniles, how to improve the survival rate of humpbacked perch and juveniles, is of great significance to the high-quality and efficient artificial breeding of humpbacked perch in the later period

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