FIELD: fishery, in particular, systems for providing natural spawning and production of young fish, such as, sturgeons.
SUBSTANCE: system has closed 8-shaped channel connected in its middle part and equipped with water circulation nozzles positioned so as to create countercurrent in channel branches, and two water volumes for spawning and incubation of fish. Said volumes are arranged at portions defined by channel branches and connected therewith at branch converging portion. Overflow pipe and water supply branch pipes equipped with semi-spherical covers are located at bottom of each of the volumes. Such a system allows diadromous and semi-anadromous producers to be prepared for spawning.
EFFECT: reduced stress loading and damage to fish, increased useful area for spawning, provision for water aeration in channel and basins, and creation of conditions advantageous for spawn incubation, development of live feed, and growing of fry and young fish.
2 dwg
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| SPAWNING APPARATUS | 0 |
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SU1697654A1 |
