Is there certain colors or paterns to identify sexes ? I added a divider in my cuttle tank and both of my small cuttles squeezed in to the side with the big cuttle . Then the big cuttle blew a white liquid into the tank 1 time . The smaller 2 stayed close together and the big one seemed to watch me more than the other cuttles . I left the egg crate divider in for the smaller ones so they can retreat to safety if needed .