What is going on??!!! The dominant blue male chases down one of the gouramis, attaches to its side, and sits there and nimbles/sucks on it! Then, one of the little female gouramis chases down one and attaches to their side! This just started today! They were fine with each other up to this point! It's a 75 gallon tank, with 3 gold and 1 blue gourami. The tank params. are fine, and no one else seems to be messing with them, although the male krib does chase them out of his territory when they get to close, but doesn't do any damage. So confused! Please help! Oh, and if it helps, the blue one is at least 4 years old, and the rest are probably yearlings.