Method of hatching Japanese horse mackerel

摘要

PURPOSE:To produce fry of striped jack at an arbitrary time independent of the season. CONSTITUTION:Matured striped jack is grown in the 1st environment at a water-temperature of =20 deg.C for =1 month, in the 2nd environment to decrease the water temperature from that of the 1st environment to 18 deg.C within 3 months and in the 3rd environment to keep the water-temperature to 20-23 deg.C until the fish becomes fertile. Eggs are collected from the fish body and fertilized and the obtained fertilized eggs are hatched.