Induced spawning procedures developed under local conditions in the Transvaal for the sharptooth catfish, Clarias gariepinus, using a combination of the chorionic gonadotrophin Chorulon with pituitary gland homogenate from the European common carp, Cyprinus carpio, or from C. gariepinus donors, are described. Egg-hatching procedures in which the glutinosity of the fertilized eggs of C. gariepinus are first neutralized using a full-cream powdered milk solution and then hatched in funnels, are compared with a method in which the eggs are directly transferred to nylon screens in trout-hatching trays after fertilization. The hatching trays proved superior and the advantages of this method are discussed
"Experientia docet" - Experience is the best teacher