How are fish fed in aquaculture?

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First of all, it removes fertilizer and chemicals from the

agricultural process. The fish waste acts as a natural fertilizer

for the crops, instead. Second of all, it saves water because the

water is recycled within the tanks rather than sprayed across a

field of crops with abandon. Thirdly, an aquaponics environment can

be set up anywhere, so it reduces the need for local communities to

import fish and crops from other countries.