I have a shubunkin and a black moor each about 2 inches , my question is why is the shubunkin looks like nipping the side of the black moor but the moor lets em. He/she just floats there and let's the shu do it I was just wondering what's going on. It's a 29 G with about 77-79degress they are active and seem to play a lot chase each other. Any ideas or advise be great