Eighty nine ripe female brooders of the catfish, Clarias anguillaris (Body weight. range: 150 1,200 g) were induced to spawn by hormone (Ovaprim^®) induced natural spawning technique over a period of 10 weeks. Matching ripe males were used for pairing the females at the ratio of two males to a female. Six ranges of brood stock body weight were considered as follows: