A. cacatoides is also a harem spawner. The smallest aquarium I have ever used for one pair is a 30 gallon. If there was only one female, she would beat the dickens out of the male unless there were dither fish around. I had 6 wild neon tetras with them and they did a spectacular job of picking off babies. IMHO the sizes of your potential apisto tanks are not large enough if you plan to do more than have your fish spawn. There are many people who take the eggs away from the mother, I _never_ do. As a result, I keep the mother with her fry until she no longer pays positive attention to them. Then I take the mother out. If you keep the male in the tank, when the female is ready to spawn again she will likely eat the existing brood in order to get rid of what she perceives, at that time, to be danger to her newer brood. If you actually want to raise fish, you will need a lot more tank space. Also, crowding of juveniles interferes with their rate of growth. I had 30 borellii in a 30 gallon tank. (Now down to 12- rest sold. I did not start with these fish because I wanted to sell the kids. I had no ideas about them whatsoever.) They are now 8 months old. They have 10 brothers and sisters in a 120 gallon tank which are now 3 months old, and getting bigger than the older ones. Cacatoides, mercifully, grow faster. I put four month old batches of 30 fry into a 65 gallon tank and they grew to almost adult size in two months. It's a lot of work to raise as many fry as possible. If you just want to raise a few, and cull the rest via dither fish, it's a lot easier. That's what I do now. My original cacatoides parents were "wild caught" blues. The male behaved as per the books. He would guard food and not allow anyone near it. The F1 s don't do that. Right now I have only one beautiful male in the 65, with three females (two have broods) along with cardinals and pygmy corys. (otos don't count, they won't bother babies). He is a very mild mannered chap compared to his father. You have to watch breeders carefully and make sure you can provide a refuge for the male. G. Kadar ------------------------------------------------------------------------- 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"!