I love Boxfish and was thinking about adding this little guy to my tank but am concerned he might be Bullied by the pair of clowns i had which are also mostly black (similar colors and size)...there are currently 3 clowns in my 20 which live in harmony the odd one out is a tomato clown. When he outgrows the tank i could always trade him in...he's only $19 so a good price but I want to make sure he isn't likely to be Bullied as Boxfish are usually pretty docile.