Bob, In my opinion you'd have problems. There are some small species that might work like A. borellii & A. staecki, but most species would fight for territory. I'd suggest a 30L if you want to keep more than one breeding species in a tank. If you do this, just make sure the species look very different. In this way you can ID the fry accurately. Knowing which female is guarding the fry isn't always a good way to ID them. Females steal fry from other females - even from other species & genera. Mike Wise Bob Crosby wrote: > Is a 20 gal. long large enough for more than one pair/trio of Apistos with > dithers or would I be asking for an aquatic showdown? > > Thanks. > > Bob > > ------------------------------------------------------------------------- > This is the apistogramma mailing list, apisto@listbox.com. > For instructions on how to subscribe or unsubscribe or get help, > email apisto-request@listbox.com. > Search http://www.digital.com for "Apistogramma Mailing List Archives"! ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://www.digital.com for "Apistogramma Mailing List Archives"!