well...I just purchased an additional clown to go in my tank and hopefully atleast make friends with the one existing clown. when I bought the new clown I thought he was a little larger than my current one, however he is REALLY close to the same size. (i know that the sizes are supposed to be different) well.......they're not making friends but showing constant aggression. they will swim side by side and then one will turn on the other and they will spar off, ending in the new fish retreating to the top corner of the tank. Will this eventually stop? or will they really hurt each other one day? when they spar, its just more show and chase than actual fighting.