My right now is 8 inches got from 3 inches to 8 in a matter of 4 months! They are very aggressive and personable!! You would need a 90 gallon minimum IMO Becareful how you feed them Tri's never know when to stop they will literally eat themselves to death. As far as beauty probably the most attractive looking cichlid out there. Had one years ago and he topped out at a chunky 14 inches!! Hopefully my new male will get that large as well.