thanks, they all have a weird relationship, not using any dither fish either. yeah the butti is amazingly the most easygoing of all of them...my CK is the bully, which is weird, an the RTGG's only mess with each other...tank looks nice fully stocked but its only a temp until my new tank/filter is fully cycled, normally its just the RTGG, p.bass, CK, and TSN.