Hello Holly In your 55 you could mix the rams with some kribs. The only thing I would recomend is that you set up the cave or flower pots for breeding on both ends not any where near the middle. I would keep the middle of the tank open for only swimming and feeding. This will cut down on the aggression and mortality rate when spawning does begin. That way both species would have an area for themselves to raise their families. John Wubbolt ------------------------------------------------------------------------- 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"!