Question

.After harvesting spawn, fry, and fingerlings are kept for conditioning.give the appropriate reson.​

Answer 1

Explanation:

Semi-natural or hormone-induced propagation of Clarias in ponds/ tanks as described in chapter one has not proved to be a reliable method for mass production of fry. Therefore, artificial propagation under controlled environmental conditions in a hatchery has become a necessity to ensure that production en masse of fry and fingerlings.