I had 4 malas in my grow out tank and all was well, until last week I bought another smaller wolf, which is presumed to be an australis (too small to tell yet). He'said been flaring at some of the other wolves and I also noticed all the malas are on one side of the tank with the lone australis on the other. One mala has an injured eye, which I can only presume was from the australis. Are they usually this aggressive?

