Device for collecting fish eggs and juvenile fish

Abstract

The invention relates to a device for collecting fish eggs and juvenile fish. The device comprises a fish collecting barrel and a conical net connected with the fish collecting barrel, wherein a cylindrical double-layer barrel in the fish collecting barrel is composed of an upper barrel section, a middle barrel section and a lower barrel section; the middle barrel section is composed of a plurality of connecting rods which are uniformly distributed along the periphery of the barrel; the upper barrel section and the lower barrel section are connected through the connecting rods; a bottom cover is hinged with the bottom end of the lower barrel section; a net fastener is sleeved on the upper barrel section; a circular steel ring is arranged at a large opening of a conical silk gauze in the conical net. The device for collecting fish eggs and juvenile fish, provided by the invention, can solve the problems that the conical net is separated from the fish collecting barrel, the eggs, juvenile fish and rubbish are clamped, the floating rubbish enters into the net, and the like; the efficiency and accuracy of investigation work can be increased; the maintenance and manufacturing cost can be reduced.

Description

technical field [0001] The invention relates to a fish roe collection device, in particular to a device for collecting fish roe seedlings used for early fish resource investigation. Background technique [0002] In the research work of fish ecology, it is often necessary to collect eggs to investigate the early resources of fish. Conventionally used ovum collection device is to use the fish bucket outer cover one deck fine mesh tulle that single-layer tinplate is done usually, connects an exposure conical net to form outside the top. In actual work, there are often problems such as easy detachment of the cone net and the seedling collection bucket, eggs and seedlings caught in the gap between the fish collection bucket and the silk net, and some floating garbage such as branches, plastic bottles, shoes, etc. in the cone net. The work brings a lot of troubles and affects the accuracy of the investigation work. Contents of the invention [0003] The technical problem to be...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a device for collecting fish eggs and seedlings, which can solve problems such as the detachment of the conical net and the seedling collection bucket, the trapping of eggs and seedlings and garbage, and the entry of floating garbage into the net, so as to improve the efficiency of investigation work and accuracy, reducing maintenance and production costs

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