Roe hatching fry temporary-culture tank arranged in natural water body

Abstract

The invention discloses a roe hatching fry temporary-culture tank arranged in a natural water body. The tank includes a hatching temporary-culture tank frame, and one side of the hatching temporary-culture tank frame is connected with a cover plate frame, and the bottom frame rod of the hatching temporary-culture tank frame is connected with multiple traction ropes; the ends of the traction ropes are connected with a sinker and an anchor, and the cover plate frame is provided with a sun net; except an opening which floats on the water surface, the other side surfaces, located in the underwater, of the hatching temporary-culture tank frame are all covered with silk yarn and form a cube cavity structure. The roe hatching fry temporary-culture tank not only can make wild roes in an original natural water environment, meet all kinds of water quality and hydrology conditions needed by roe hatching, overcome the influence of differences between human factors and artificial water environmental factors on the roes, and improve the hatching rate of the roes and the quality and survival rate of fry, but also can prevent birds from invading the roes and the fry and hard light from irradiating, and thus improve the accuracy of scientific research data and the protection work of fish.

Description

technical field [0001] The invention relates to a fish roe hatching fish fry temporary culture tank placed in a natural water body, which is suitable for the hatching of fish roe and the breeding of larvae in various slow still water bodies. Background technique [0002] In the work of fish protection and fish resources investigation and research, it is often necessary to artificially incubate wild fish eggs collected in natural water bodies and raise them to a certain size for subsequent species identification, data statistics and artificial breeding reserves, etc. Work. At present, in the existing work, it is mainly to transport the collected fish eggs back to the laboratory or breeding base and put them into artificial water bodies for hatching and cultivation. Because wild fish eggs are very sensitive, under the influence of transportation process, manual operation and the difference of environmental factors between artificial water bodies and natural water bodies, the ...

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Problems solved by technology

[0003] In view of the above-mentioned problems, the technical problem to be solved by the present invention is to provide a temporary breeding tank for fish eggs hatching fry that can be placed in natural water bodies for wild fish eggs and fry. In the natural water environment, meet the various water quality and hydrological conditions required for the temporary breeding of fish eggs and fry, overcome the influence of human factors and artificial water environment factors on fish eggs and fry, and improve the hatching rate of fish eggs, the quality and survival of fish fry It can also prevent birds and egg-eating fish from invading fish eggs and fry and the irradiation of strong light. It is easy to collect fish eggs and fry that are difficult to collect by various conventional methods. It is very convenient to collect samples and count, thereby improving the accuracy of scientific research data. sex and fish conservation efforts

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