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Pumps
Pumps
Source: FAO-Fish.Tech.Pap.222, p. 59

ISSCFG code: 10.3 – standard abbreviation: MPM
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Characteristics
OverviewPumps as fishing gear can be used only for the harvest of dense concentrations of small species (or cephalopods) not too far from the surface (but occasionally up to almost 100 meters). Mostly the fish is attracted and concentrated by artificial lights. With pumps the prey is taken on board. Because of the limited area of light attraction and effects of suction and performance of the pumps, this technology can be used only for a few species. The method is not very commonly used. Notes: Pump fishing here in reference should not be mixed with some other use of pump: - On board larger trawlers or purse seiners (for small pelagic fish) to get the catch on board (for emptying the codend of the trawl or the bunt of the seine net). - When dredging with hydraulic dredge.Handling EquipmentPump fishing is mostly carried out in connection with light attraction.Vessel OverviewThe few vessel using pump for fishing are, in general, 20 to 30 m long and equipped for attracting fish with light.Fish OperationThe fish are attracted by light from the depths and concentrated to the area of the suction nozzle. Thereafter the fish are taken on board the fishing vessel by means of a pump. Brief dimming of the lights and brief periodical changes in the depth of fishing increased the catch.Target SpeciesThis method is limited to a small number of species, especially small pelagic fish and cephalopods.Water Area OverviewAll over the world.Gear EnvironmentPumps can be employed in inland and sea waters, mainly within surface waters.ImpactsSpecies No negative impact was ever observed since this fishing is carried out off the bottom and the effectiveness of the pump is limited to a small area around. No bycatch.
 
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