Fish enhancement and releasing marking method

Abstract

The invention discloses a fish enhancement and releasing marking method. Mark holes are fixed to tail fins and dorsal fins of fish bodies and divided into two kinds of holes with different sizes and diameters, numbers represented by the mark holes with the same diameter in the dorsal fins and the tail fins are different, the large holes and the small holes are marked according to the positions where the upper portions are larger than the lower portions, and the numeration rule is read in a one-back and three-tail mode. In order to solve the problems that in widely known technologies, enhancement and releasing fish marking work intensity is large, marked individuals are difficult to visually inspect, and group marking and individual marking are hard to consider, the fish enhancement and releasing marking method through which the marked individuals are easily inspected visually and sorted, group marking and individual marking are carried out at the same time, working efficiency is improved, and work intensity is reduced is designed. The marked individuals can be rapidly sorted out of fishery catches caught again through a visual inspection method; the marked fishes cannot lose marks within a year; growth and development and reproduction performance of the marked fishes are not affected, and the long-term marking method can be used for fish variety breeding and crossbreeding and improving.

Description

technical field [0001] The invention belongs to the technical field of fish resource restoration, and in particular relates to a marking method for fish multiplication and releasing. Background technique [0002] At present, there are many marking methods for breeding and releasing fish, but all of them have defects of one kind or another. The main defects are that it is labor-intensive and time-consuming, and it is difficult to quickly sort out the released fish from the catch after recapturing, and the label cannot be read quickly. For example, the fin clipping method (group marking method, cutting off part or all of the dorsal fin, pelvic fin and caudal fin) will re-grow after marking, and it is difficult to distinguish it from unmarked fish; the signboard of the listing method is easy to fall off. The fluorescence method in individual markers generally disappears within 1-3 months, and the detection is time-consuming, and special equipment is also required; the molecular...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a marking method for fish multiplication and release, aiming at solving the problem that the marking method for fish multiplication and release has high work intensity, is difficult to adapt to group marking, and the marking efficiency is low, and it cannot be quickly found in catches by visual inspection. To mark individuals, and most of the marking methods disappear after the marked fish grow into adult fish and breeding fish, which brings inconvenience to the selection and improvement of breeds

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