Had them since 5inches in the same 60g tank for almost 8 months now. Rarely do they ever fight and even when they do it doesn't go on for too long. Not sure of their genders but will send pics if interested. I've fed them shrimp, crickets, and also pellets. I'm located in Fremont, ca. If you want to reach me call 5102006445, if I don't answer leave a message and ill get back to u ASAP!