Fish and plankton collection trawl

Abstract

The invention discloses a fish and plankton collection trawl which comprises a net and a support fixed to the opening of the net. A cod-end is arranged at the bottom of the net; an intercepting device covering the opening of the net is arranged in the support; a plurality of floating balls and iron balls which are detachable are arranged on the side surface of the support; tow lines are arranged at the edge of the support. The fish and plankton collection trawl can realize accurate collection of fish and plankton at different water levels.

Description

Technical field

[0001] The invention belongs to the technical field of fishery, and particularly relates to a fish plankton collection trawl. Background technique

[0002] In recent years, the state has paid more and more attention to fishery resources, and successively issued the "Announcement of the Ministry of Agriculture on the Implementation of the Minimum Net Size System for Marine Fishing Gear and Transitional Fishing Gear" and the "Catchable Specifications for Important Fishery Resources Part One: Marine Economic Fish" ”And other relevant announcements and standards, as the basis for protecting fishery resources. In the protection of fishery resources, fish eggs and larvae are the basis for the supplement of fish resources and the sustainable utilization of fishery biological resources. They are of great significance in studying the distribution of marine fish resources and determining the fishing grounds and floods. Carrying out fish roe and larval fish surveys is parti...

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