I have one female gold sailfin Molly and one male of same... and also one female Dalmatian Molly and male of same. So far only the gold sailfin Molly has had fry. They are over a month old and doing great. I haven't seen the other Molly get large or have babies yet. I know about guppies and what to watch for but with a white body Molly I can't see a gravid spot and she's already a large fish. The Dalmatian male is always with her. I know my ratio isn't right but I can't add any fish until my new tank is set up. I hate MTS! My questions. Will the two kinds of Molly fish breed with each other? The golden make sailfin Molly doesn't seem interested in either. What signs to watch for in pregnant Molly fish? My female golden sailfin was pregnant when I got her. She is getting large again! Thanks.