i think you'll find he's gonna kill everything else in his tank soon anyway. as i know it the hump is generic and cant be induced by feeding. as for colour id agree with delgado. that hikari stuff is really good
Alright, cool. I already noticed his head size went down a bit since I put him in with other fish....my water is around 6.8....is that good, or should I raise/lower it???
well some people may disagree but ive always felt that its better for a fish to have a wrong PH that is going to be stable than to have the right PH that will almost certainly fluctuate.
the ideal water PH for FH is 8 to 8.5...but as danny boy said your PH should be stable coz your FH might suffer from PH shock which is fatal to your fish....