Merits:
(a) We can have desired type and quantity of fish at will.
(b)Through
fish culture we get fish meat which is highly nutritive food containing
vitamins, useful fat and most easily digestible protein.
(c)Through properly improved fish culture techniques large amount of fish can be obtained from small area.
(d) Food problems can be solved to some extent.
Demerits :
Through fish culture the number of selectively cultured fish are
increasing while the less economical fish are being discarded which is
causing a threat to biodiversity and fish gene bank.