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A raceway farm for freshwater fin fish usually has a dozen or more parallel raceway strips build alongside each other, with each strip consisting of 15 to 20 or more serial sections. [16] The risk of unhygienic conditions increases towards the lower level sections, and can be kept in check by ensuring there are not too many sections and the ...
Increasing the spawning ability of a fish population may reduce pressure on a fishery and improve the productivity of supplemental stocking from fish hatcheries. In the inland waters of North America, a typical spawning bed will consist of a series of concrete boxes filled with aggregate gravel.
Medieval fish pond still in use today at Long Clawson, Leicestershire. Records of the use of fish ponds can be found from the early Middle Ages. "The idealized eighth-century estate of Charlemagne's capitulary de villis was to have artificial fishponds but two hundred years later, facilities for raising fish remained very rare, even on monastic estates.".
Fish farming or pisciculture involves commercial breeding of fish, most often for food, in fish tanks or artificial enclosures such as fish ponds. It is a particular type of aquaculture , which is the controlled cultivation and harvesting of aquatic animals such as fish, crustaceans , molluscs and so on, in natural or pseudo-natural environments.
Hawaiians constructed oceanic fish ponds. A remarkable example is the "Menehune" fishpond dating from at least 1,000 years ago, at Alekoko. Legend records its construction by the mythical Menehune dwarf-people. [187] In the first half of the 18th century, German Stephan Ludwig Jacobi experimented with external fertilization of brown trout and ...
Settling pond at the Bardney sugar factory in Lincolnshire, England Settling pond under construction, Blue Ribbon Mine, Alaska. A settling basin, settling pond or decant pond is an earthen or concrete structure using sedimentation to remove settleable matter and turbidity from wastewater.
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