A kind of artificial seedling raising method of outdoor ecological pond of redfin snapper

Abstract

The present invention provides a method for artificially raising seedlings in an outdoor ecological pond of red-fin snapper, comprising the following steps: (1) selecting an outdoor pond, cultivating Chrysanthemum gracilis around the pond; laying volcanic rocks, vermiculite and wheat at the bottom of the pond Fanshi; (2) Before the opening of the larvae, inoculate 5-100,000 Chlorella / mL and 2-40,000 Chrysanthemum / mL into the pond. After the water quality in the pond is stable, put the red-fin snapper larvae into the pond. Described pond, throwing density is 3~50,000 / mu; (3) 1-5 days after larvae are opened, throw and feed oyster larvae every day, and sprinkle coconut juice simultaneously; (4) 6-10 days, throw every day Rotifers were fed, and corn meal was fed at the same time; (5) On the 11-20th day, sunworms were fed every day, and Houttuynia cordata and coconut meat compound fermented feed was fed at the same time; (6) On the 21-40th day, miscellaneous food was fed every day The fish was minced, and dried algae powder was sprinkled weekly to harvest red fin snapper fry. The harvested red fin snapper fry had a high survival rate and a large size of nursery, which significantly reduced the coefficient of variation.

Description

technical field [0001] The invention relates to the technical field of red-fin snapper seedling raising, in particular to a method for artificially raising seedlings of red-fin snapper in an outdoor ecological pond. Background technique [0002] The redfin snapper (Lutjanuserythropterus) is a species of fish in the snapper family, snapper genus. The body is flat on the side, the mouth is large, and the eyes are large. The body is reddish brown on the back, and the juveniles have a dark wide oblique band from the origin of the dorsal fin to the tip of the snout. Redfin snapper is a high-quality marine fish, and the market demand is large. The demand for red fin snapper is large, and there are high requirements for the breeding of red fin snapper. However, the existing methods of raising red fin snapper tend to have many variations and the size is not large enough, which is not conducive to the subsequent cultivation of fine red fin snapper. SUMMARY OF THE INVENTION [00...

AI Technical Summary

Problems solved by technology

There is a large demand for red-finned snappers, and there are high requirements for the breeding of red-finned snappers. However, the current breeding methods for red-finned snappers often have many variations, and the size is not large enough, which is not conducive to the follow-up fine-quality breeding of red-finned snappers.