I got a colony of these myself, wonderful fish. F1's from a seller that buys from Atlantis fish. You use feeder guppies though? Never tried that cept for a few times when I had a Jardini in my tank and it refused the bloodworms I'd been giving. Needless to say, my Nimbo Venustus got all excited among others. I try not to habit that myself. To scared of putting a pathogen in the tank.