Hi Helen, I agree on the species tanks but colour morphs are the same species. These fish may already be "mongrel" specimens that just happen to have been tagged red or blue depending on the colour of the caudal. >From the Apisto list archive on Erik's page written by Pete Johnson comes the following information by Uwe Romer on Aga colours "No, the agassizii are just what we brought back from Peru -- they're blue aggies, though some seemed to show other colors as they grew out. Interestingly, Uwe Romer, a German apisto expert who just spoke to the ACA in New Orleans, says that if you breed wild aggies, regardless of whether they're blue, yellow or red, the offspring will show all the color varieties." Given enough tanks I agree with you that keeping colour forms separate is best but I think it is acceptable if tank space is a problem and you need a new fish to keep your colony going or need to introduce unrelated blood. Ken. > Ken, > I'm sorry to disagree with you but surely this is the main reason we house > them in species tanks. I don't want to buy dwarfs which have been mixed > with other colour morph females. Not all hobbyists are able to obtain wild > strains. > Helen. > > ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@majordomo.pobox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@majordomo.pobox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!