I have a Dalmatian Molly - he was the chillest most docile fish in my tank. He has grown to about three inches now - and yesterday, I noticed him terrorizing my other molly a black and gold (I forget the name but it is not a lyetail) who is smaller. They are both males. I am concerned that B&G is going to get hurt. Dalmatian is also flaring up his dorsal fin a lot. Is this adolescent behavior, or a serious concern. My water tests come back fine - although the water is cloudy - especially after the light has been off.