i got my cories yesterday. i didnt notice till i got home that 1 of them was different. will that one be ok? they are aeneus cories. the other one has blakc strips going from head to tail. and they seem active when im not watching but when i show up they stop and move to the other side. then when i go to the other side they go to the other side. and then they go nuts and then clam down. they are also breathing fast after they do that. is this normal?