I just added two 5" CKs to my 240. The three 4" Gold3SpotGouramis immediately started harassing them. The Gouramis usually fight amogst themselves, but they always leave the tank's other inhabitants alone. I fed right before I added the CKs and turned the lights off. What gives? Is this a predictable response by the Gourami? (The Gouramis were always going to be relocated or allowed to become CK food when the CKs got big so moving them out of the 240 doesn't break my heart.)