Simply-equipped small-size fish trapping device

Abstract

The invention relates to a simply-equipped small-size fish trapping device which comprises a capturing barrel and a cover. The bottom of an inner cavity of the capturing carrel is cone-shaped. An open hole is formed in the center of the bottom of the capturing barrel, and the open hole of the bottom is provided with an inner-side-toward flanging and a detachable internally-installed outlet plug. A detachable cover is arranged on an opening in the capturing barrel. A capturing mouth is formed in the center of the cover, and the inner side of the capturing mouth is connected with a fish channel tube. A cover with a mesh cover is arranged on the capturing mouth. One-way through holes are evenly formed in the cover with the mesh cover in a distributing mode and are matched with fishes to be captured. Bait holes are evenly formed in the periphery of the capturing hole in a distributing mode. Cylinder-shaped bait tubes are arranged on the bait holes. Small holes are evenly and densely formed in the peripheries of the tube walls and the bottoms of the cylinder-shaped bait tubes communicating the inside of the cylinder-shaped bait tubes and the outside of the cylinder-shaped bait tubes. Bait tube plugs are used for sealing openings of the cylinder-shaped bait tubes. The simply-equipped small-size fish trapping device is good in sheltering performance in a water body, simple in structure, low in manufacturing cost, high in repeating utilization rate, and high in practical applicability.

Description

technical field [0001] The invention belongs to the technical field of fish catching devices suitable for shallow water areas, and in particular relates to a simple and small fish trapping device. Background technique [0002] At present, in the field of aquatic fishery scientific research in China, simple devices such as hand-made nets are often used for the process of harvesting small fish experimental organisms in water bodies. However, because these devices cannot be concealed in the water body, fish are often caused to swim and escape quickly due to the disturbance of the water body during the capture process, so that the capture success rate is low. In particular, the frequent use of hand-coiled nets back and forth may easily cause damage to the fish body during the catching process, thus affecting the relevant experimental research results. Due to the limitation of material and design, many hand-made net devices have small capacity of net pockets, and there is no clo...

AI Technical Summary

Problems solved by technology

However, these devices cannot be concealed in the water body, and often cause fish to swim and escape quickly due to the disturbance of the water body during the capture process, making the capture success rate low

In particular, the frequent use of manual nets back and forth is likely to cause damage to the fish during the catching process, thus affecting the relevant experimental research results

Due to the limitation of material and design, many hand-made nets have small net pocket capacity, and there is no closed structure around them, which may easily cause fish in the net pocket to escape; and frequent operations for a long time may also easily cause damage to the net body and repeated installation. low utilization

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