My 4 inch chocolate has become a real jerk, he spends most of his day keeping a larger male severum in one corner. Recently he has been nipping the fins pretty hard, Ive tried to re-arrange the 100 gallon a bunch of times and nothing seems to work. The only time hes calm and sits in his cave is after hes eaten a ton. Dont really have any option to rehome him as my other tank up right now is a 90 with a rd. He used to be a calm fish but now is not, have others found this to be true, from most ppl it seems that they are pretty laid back but..