Culturing fishes in ponds and pools is called _________.
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polyculture or composite culture
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Fish farming or pisciculture involves raising fish commercially in tanks or enclosures such as fish ponds, usually for food. It is the principal form of aquaculture, while other methods may fall under mariculture. ... As of 2016, more than 50% of seafood was produced by aquaculture.
Oxygen: 6 mg/l for coldwater fish; 4 mg/l for warmwater fish
Copper: < 0.0006 mg/l in soft water; <0.03 mg/l in hard water
Cadmium: < 0.0005 mg/l in soft water; < 0.005 mg/L in hard water
Chlorine: < 0.003 mg/l
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