A kind of space-limited breeding net cage for preventing carp from preying on juvenile fish

Abstract

The invention relates to the technical field of aquaculture, and discloses a limit culture net cage for preventing erythroculter ilishaeformis from feeding on juvenile fish. The limit culture net cagecomprises an exterior culture net cage body, two connection blocks are fixedly mounted on the two sides of the exterior culture net cage body, and movable pipes are fixedly sleeved with the middles of the connection blocks; the tops of the movable pipes extend to the upper portions of the connection blocks, the bottoms of the movable pipes extend to the lower portions of the connection blocks, the movable pipes movably sleeve positioning rods, and the bottoms of the positioning rods extend to the outer portions of the movable pipes. According to the limit culture net cage for preventing erythroculter ilishaeformis from feeding on juvenile fish, a screening net is blocked off through cooperation of a check block and a draw rod, under the action of the screening net, on one hand, fry bred by erythroculter ilishaeformis can swim out of an interior culture net cage body, on the other hand, the erythroculter ilishaeformis fish are blocked so that the fry bred by erythroculter ilishaeformiscan be prevented from being caught, and thus the effect of preventing erythroculter ilishaeformis from feeding on juvenile fish is achieved.

Description

technical field [0001] The invention relates to the technical field of aquaculture devices, in particular to a space-limited culture net cage for preventing carp from preying on juvenile fish. Background technique [0002] The cocked-billed red carp, referred to as carp, is a kind of fish belonging to the family Cyprinidae. It is large in size, slender, flat on the side, in the shape of a willow leaf, straight on the back of the head, raised on the back of the head, with a superior mouth and a firm mandible. Thick and sharply upturned, erected in front of the mouth, making the mouth cleft vertical, big and round eyes, small scales, the cocked mouth is a large-scale freshwater economic fish in the middle and upper layers, it moves swiftly, is good at jumping, has a violent temper, and is easily frightened. It grows rapidly and is a ferocious carnivorous fish that feeds mainly on live fish. It feeds mainly on plankton and aquatic insects in the seedling stage. It mainly eats s...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the technology of the comparative literature, the invention provides a kind of limit culture net cage for preventing chrysalis from preying on young fish, which has the advantages of preventing chrysalis from preying on larvae and adjustable height, and solves the problem of not having a separation device. , and it is inconvenient to separate the juveniles of the chrysalis from the chrysalis, resulting in the phenomenon that the juveniles are preyed on by the chrysalis, thereby reducing the income of farming. In different waters, fixed rods of different heights are required, and the length of the fixed rods is long, which makes it inconvenient to purchase them when they are urgently needed, which in turn affects the problem of fixed use of the aquaculture net cages.

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