my ink fins and my gold heads sort of "teamed up" and keep my comp. tanzanian blacks in the corner of the tank sometimes they get them pinned behind the filter. most of the time on the left corner of my tank. well i thought it doesnt have enough fish in there i have 6, 2 of each kind in a 55g and or theres not enough rocks and caves for them so i went out and bought more and they have plenty of room to hide and plenty of caves and little holes to hide in. this did not resovle the issue still. so i put a rock in that corner and its doing somewhat better but they want to come out and they get chased into the rock now.... ahhh???? :-?