Fish measuring method and device thereof

Abstract

The invention discloses a fish measuring method and a device thereof. An anesthesia box for measuring and classifying fish is set, and the fish are divided into big fish and small fish according to the measured body weight of sexual maturity, so that the big fish and small fish can respectively enter higher concentrations. In the anesthetic bath with a lower concentration, no manual identification is required, and the classification and sorting of fish bodies can be automatically completed, saving the time of manual identification. At the same time, a fish measurement device that can obtain accurate measurement reference points is installed, and the bottom plate of the measurement box is used to , the rear baffle and the left baffle are used as the reference points for measuring the overall length, height and width of the fish body, and the sliding baffle which is parallel to the rear baffle and can move back and forth relative to the rear baffle is set as the indirect measurement conductor of the height of the fish body, so that Only the lower end of the width measurement scale on the vertical measuring ruler is in contact with the fish body, reducing the risk of contamination of the width measurement scale, height measurement scale and length measurement scale, and improving the use of the width measurement scale, height measurement scale and length measurement scale life, and can obtain accurate measurement results.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a fish measuring method and a device thereof. Background technique [0002] Ichthyology is a discipline that studies the taxonomy, morphology, physiology, ecology, phylogeny and geographical distribution of fish. Research on the geographical distribution, migration habits, age growth and feeding habits, disease control, artificial hatching and other aspects of fish is of great significance to the development of fishery production. In ichthyology research, the body shape characteristic parameters of fish are important basic parameters for fishery resource investigation, fry breeding, and broodstock breeding. At present, although some photographic measurement technologies have appeared at home and abroad, due to the complexity of equipment and high cost, the most convenient and most widely used technology is still anesthetized by anesthetic baths in the early stage...

AI Technical Summary

Problems solved by technology

[0003] In view of the above existing problems, the present invention provides a fish measuring method and its device, which utilizes the difference in the pressure and deformation of the free ends of the classified shrapnel due to the difference in the weight of the fish body, and sets the fish measuring and classifying anesthesia box, according to the measurement of the sexual maturity of the fish. The body weight is divided into big fish and small fish, so that big fish and small fish can enter the anesthesia bath with higher concentration and lower concentration respectively. According to the body size, no manual identification is required before anesthesia classification, and the classification and sorting of fish bodies can be automatically completed. It saves the time of manual identification, and can effectively avoid the situation of throwing small fish into a high-concentration medicated bath anesthetic solution to death. At the same time, a fish measuring device that can obtain accurate measurement reference points is set up, using the bottom plate of the measurement box, The rear baffle and the left baffle are used as the reference points for measuring the overall length, height and width of the fish body, and the sliding baffle which is parallel to the rear baffle and can move back and forth relative to the rear baffle is used as an indirect measurement conductor for the height of the fish body. The vertical measuring bar on the top of the sliding baffle, and the vertical measuring ruler perpendicular to the measuring bar and extending vertically downwards, so that only the width measuring scale on the vertical measuring scale is used in the width measuring scale, the height measuring scale and the length measuring scale The lower end of the scale is in contact with the fish body, reducing the risk of contamination of the width measuring scale, height measuring scale and length measuring scale, improving the service life of the width measuring scale, height measuring scale and length measuring scale, and obtaining accurate measurement results

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