Hi, Marco ! Thanks for your help. The tank-bred pairs that I mentioned were from a friend of mine, who breeds M. ramirezi at least for six generations. He has a huge tank and the M. ramirezi spawns there, and he always moves the eggs to another tank, because there are some bigger fish that could eat the eggs or the offspring.The "wild caught" M. ramirezi are not really wild caught : they were bought at a petshop and they were raised in Mage. Does the M. ramirezi in Mage raise its eggs and fry or are the eggs incubated artificially ? \\\\|//// / _ _ \ ( (o) (o) ) __________oOOO___(_)___OOOo_________ Carlos Eduardo Alves Ribeiro http://www.Montreal.com.br/~carlos.ideiafix fish@montreal.com.br Rio de Janeiro - Brazil