I found this out the hard way some time ago. I went to my LFS, saw this cute little african cichild and convinced myself I should have it. I didn't know any better. Threw it in with some of my bigger SA/CA cichlids (I'm talkin 2" to 3" bigger). The Kenyi killed my 4" Salvini, and laid a beating to my GT within 5 days of being introduced. Needless to say, I learned my lesson the hard way. Keep that Kenyi to himself in the 29gal. Just my 2 cents