Herbivorous fishes and fishing problems
Harvesting of commodity fish is one of the most labour intensive processes in fish farming and amounts about 50% of total man-hours (by the data of VNIIPRKh). The necessity is obvious for creating more productive fishing systems. Pasture fish farming on large water bodies should be followed by fishing with use of industrial fishing methods. The author discusses electric trawl fishing one-time having been used for harvesting fish in large reservoirs. When rationally organized, the fishing do not harm the stock and is preferable in comparison with net fishing. The author, however, supposes the pair trawling to be the most productive fishing method. The third vessel is needed equipped with a system of fish entrapment in catching device with use of electric field. The author believes that it is possible to use as lifting mechanism fishpumps if pumping fish is not being harmed.