So it looks at though the bigger male has gotten the end of his tail chewed a bit. I came home to find some blood flung on the side of the tank and then found one of the males tail has been bitten or chewed down a bit. Is this normal pecking order among them? Or is this something to be of great concern about? I do have a 2:4 colony, should I perhaps make that two 1:2 colony and break them up?? The other male is still very small and might be another month before he is mature enough to breed.