Fish anadromous migration assisting method
A technology for assisting fish migration and migration, which is applied in the field of assisting fish upstream and downstream migration, can solve the problems of unmonitored fish passing through fish passages, huge cost of fish passage construction, and high requirements on geographical conditions, so as to reduce fish stress. Reaction, stable deformation, small mesh deformation effect
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[0038] figure 1 Shown is the device for assisting fish upstream migration of the present invention, which can be arranged multiple times on both sides of the river channel 1, such as figure 1 As shown, due to space limitations, only the left and right pairs are shown in the figure. The device comprises: a water inlet channel 2, a fish pond 3, a trapping channel 4 and an induction net wall 5.
[0039] Wherein the induced mesh wall 5 extends from the bank to the center of the river; the angle between the induced mesh wall 5 and the flow direction of the river is less than 60 degrees, preferably 30-60 degrees. Preferably, the end of the induced mesh wall 5 is bent inward into a barb shape. The corresponding induced net walls 5 on both sides of the strait form an inverted figure-eight shape, overlapping but not connected in the middle.
[0040] The trapping waterway 4 extends toward the river bank along the opposite direction of the induced net wall 5, and the upstream side of ...
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