recently picked up 7 hydrolycus tats. always schooled together ate together and hung out in front of powerhead together. yesterday evening i noticed one of the tats is in the other end of the tank by himself, almost hiding in the darkest part of the tank. and on the opposite side where everyone is parked in front of current theres another tat out of the current just staring to the other end. when i feed one swims up and other chases it away. how wouldyou guys handle a sit like this. tats are all about 5.5". the one hiding is the skinniest one. tank is a 7ft x 2ft. dim lighting. water parameters are all perfect. thanks
