Fish school roe hatching device for fish protection

Abstract

The invention relates to the technical field of roe incubation, in particular to a fish school roe incubation device for fish protection. The fish school roe incubation device comprises a water tank, a water inlet pipe is fixedly connected to the bottom end of the outer side wall of one end of the water tank, and one end of the water inlet pipe penetrates into the water tank and is communicated with a plurality of water spray pipes arranged in parallel; and multiple water spraying holes are formed in the top end of the annular outer side wall of each water spraying pipe at equal intervals. According to the fish school roe incubation device, through the arrangement of a first bottom frame and a second bottom frame, the first bottom frame can be replaced conveniently, roes can penetrate through the second bottom frame conveniently, and therefore fries and the roes which fail to be hatched can be separated conveniently; and through the arrangement of a fixed rod, a holding rod and a supporting arm, the holding rod is held and lifted upwards, two bottom plates are turned upwards to be matched with side plates to close an opening in the bottom end of a carrying box, the carrying box and water and the fries in the carrying box can be carried together by lifting the holding rod, the fries can be carried and collected conveniently after roe incubation, the condition that the fries are scared and hurt in the fry collecting and carrying process is reduced, and therefore the follow-up survival rate of the fries is increased.

Description

technical field [0001] The invention relates to the technical field of fish egg hatching, in particular to a fish school fish egg hatching device for fish protection. Background technique [0002] Songjiang perch is a coastal migratory fish that can grow in brackish water and pure fresh water. It is a second-class protected animal in China. The reason for endangerment is that overhunting, migration has been cut off, and increasing water pollution has affected the survival of perch. Environment, the production of Songjiang perch is getting less and less. Artificial hatching of Songjiang perch fry can effectively help restore the number of Songjiang perch in the wild environment, which is conducive to the protection of Songjiang perch. [0003] In the existing fish egg hatching device, after the fish eggs are hatched, it is often necessary to fish out the fry in the hatching device by dipping the net and place them in a container filled with water, and the dipping net is frequ...

AI Technical Summary

Problems solved by technology

[0003] In the existing fish egg hatching device, after the fish eggs are hatched, it is often necessary to fish out the fry in the hatching device by dipping the net and place them in a container filled with water, and the dipping net is frequently stirred in the hatching device, which makes it easy for the fry to collect. In order to avoid the fish eggs that failed to hatch, they will be frightened, which will cause the fry to move violently, resulting in a decrease in the survival rate of the fry in the later stage. Deterioration of water quality in nursery ponds

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