671
32.3.3 Artifi cial Propagation
Fishery managers may also manipulate fi sh
population by using various methods of artifi cial
propagation (Plate 32.3 ).
Aquaculture , also sometimes known as fi sh
culture , or fi sh farming in a specifi c sense, may
be defi ned as raising of fi sh in captivity . It is an
effective method of increasing fi sh population.
There is no doubt that the potential for aquaculture is good ; its importance in providing food
will increase as world population grows . In
order to lower capital investment costs, researchers are investigating the traditional practices of
Plate 32.2 Alteration of vegetation
Plate 32.3 Aquaculture in Assam University pond
32.3 Biotic Manipulation
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