Hi i bought 2 KKPs for my 4 foot aquarium.and when i released them in my tank all was well.but after a few days i saw that one of them is chasing onother one and after that i always saw that onother one is always hiding and lying down.he dosent come to eat.i thought he was sick but i was wrong when i take out my onother one and put it my another tank the fish that was sick become normal.and i think he is very healthy right now he is eating well.and onother one i put it in my small tank he is also eating well.i am very confused right now.i am thinking of buying 1 other pair of KKP.so that they will not fight.does anyone know any thing about this kind of problem? please tell me everything if u anything about this kind of problem.Help Me!