A kind of green fin horse face fish spawning ground and egg harvesting method

Abstract

The invention discloses a navodon septentrionalis spawning site and an ovum harvesting method. A spermatovum harvesting device of the navodon septentrionalis spawning site comprises a plastic corrugated sheet which is taken as a base of the device, lead weights or other weights are arranged on four corners of the base of the device, and four pieces of rectangular soft plastic cloths which are mutually staggered are arranged on the base of the device. The device is placed at the bottom of the navodon septentrionalis spawning site, the soft plastic cloths which are sewn and fixed on the device are placed upward, the direction of the soft plastic cloths is vertical toward the direction of water flow, and ova adhered on the plastic corrugated sheet base and the soft plastic cloths are collected after parent fishes spawn. The device can simulate condition of the navodon septentrionalis spawning site in natural sea area, an environment which is more familiar and adaptive to the parent fishes is formed, the parent fishes can be shielded, and stress response in a parent fish rearing process is reduced, thus being more convenient for the mating and spawning of the parent fishes.

Description

technical field [0001] The invention relates to a breeding site and method for fish, in particular to a spawning site and an ovum harvesting method for green-finned horse-faced fish. [0002] Background technique [0003] Greenfin horse-faced fish Thamnaconus modestus The genus Tetraodontiformes of the order Tetraodontiformes, the family Monacanthidae of the single-horned fish, the genus of the horse-faced fish Thamnaconus , commonly known as elephant skin fish, bread fish, peeled fish, peeled wolf, etc., the English name is Drab filefish. The green-finned horse-faced fish belongs to the warm-temperature bottom fish in the open sea, and is distributed in the Bohai Sea, the Yellow Sea, the East China Sea, the Korean Peninsula and the Sea of ​​Japan in the northwest of the Pacific Ocean. From the 1960s to the 1980s, the catch of green-finned horse-faced fish was very high, and it became one of the main fishing targets in the East China Sea in 1974. In the 1980s, the annual...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to address the existing deficiencies, provide a green finfish spawning ground and egg collection method, overcome the relatively small number of fertilized eggs collected in the prior art, and most of the eggs cannot be collected The problem

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