Lamplight drop net with fish classifying device and spotted silver, carp fry safe escape channel

Abstract

The invention discloses a lamplight drop net with a fish classifying device and a spotted silver carp fry safe escape channel. When fish is caught by the lamplight drop net, spotted silver carp fries are freed through the spotted silver carp fry safe escape channel, and the adult spotted silver carps and small wild trash fish in a reservoir are classified and caught into the net bag of the lamplight drop net. The finished product fish and the small wild trash fish in the reservoir are caught by the lamplight trap drop net, so the spotted silver carp fries are not injured. The lamplight drop net has clever design, is easy to operate and does not consume time and labor. The catch quantity and freeing operation of the spotted silver carp and the small wild trash fish in the reservoir can be determined according to the specific situation of each reservoir, so that the economic benefit of the reservoir and ecological balance of fish in the reservoir are guaranteed, ecological environment-friendly property and economic property are optimized, and high popularization value is achieved.

Description

technical field [0001] The invention relates to a lifting net for fishing with light, in particular to a lifting net for fishing with light equipped with a special passage for safe escape of silver carp and bighead carp fry and a fish separating device. Background technique [0002] Lighting fishing nets are used at night, also known as lighting nets. The width and length are generally more than 20 meters, and the larger ones are more than 40 meters. For its specific structure, see figure 1 , the bottom outlet in the middle of the fishing net 1 is connected to the fishing net net bag 8 in a detachable manner, and the opening at the bottom of the fishing net net bag 8 is tied with ropes; The two corners are connected to the winch 4 for lifting the net; the light source device includes a light bulb 5 positioned at a height of about 1 meter in the center of the fishing net, and is connected to power sources such as a generator 7 through an electric wire 6. [0003] Light trap...

AI Technical Summary

Problems solved by technology

[0004] However, what troubles the fish farming operators and workers in the reservoir is that when using light to lure fish and lift the net to catch fish, after the net is caught, the fish in the net bag is generally between several hundred catties to several thousand catties, and sometimes can reach tens of thousands. catty

The screening and separation of silver carp and bighead carp fry, silver carp and bighead carp adult fish, and small wild miscellaneous fish can only be done manually, which will consume a lot of time and labor, cause great damage to silver carp and bighead carp fry, and a large number of dead fry will Increased fishing losses in reservoirs

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