I have a 29 gallon tank. All fish (except for the Angel) have been living piecefully together for at least 7 months. I just added 1 small Angelfish and now my German Blue Ram (only have one) is attacking every fish in the tank. Please help. I have isolated the Ram for now. I have 7 X-ray Tetras, 2 Oto's, 1 Angel, 1 Ram, 1 jaguar Synadontis Catfish. Any suggestions?