Effect of Water Temperature on Ovaprim-Induced Breeding Performance of Morakhi (Cirrhinus mrigala) Under Hatchery Conditions

Abstract

Artificial propagation by hormone-induced breeding has now become an essential means to produce seeds of economically important freshwater fishes sustainably. Water temperature is one of the most important environmental parameters affecting the reproductive physiology, maturation of gametes, spawning activity and development of embryos during induced spawning. The present study examined the effects of different water temperatures on the breeding performance of Morakhi (Cirrhinus mrigala) using Ovaprim in hatchery conditions. This experiment was carried out in June 2026 at SFARI, three consecutive breeding trials were used. Five pairs of mature broodstock were used for each trial. Female broodfish were given 0.5 mL kg-1 body weight of Ovaprim (Syndel) and males were given 0.3 mL kg-1 body weight via intramuscular injection at the base of the dorsal fin.