fierofish, please take note of thread dates, this thread has not been active in over 1.5 years. To add to your post, though the locking lips behavior is common when breeding, if not breeding, should be discouraged as it can lead to a bacterial infection of the lips. Closing thread.My large male female do all the time and are both very healthy. Though I wanna say they try to breed but are sterile. They go through the motions anyways. A lot of people think that means they should be separated and others say that's just a common cichlid thing. Mine do great but not all will. I do need s much larger tank and am searching but they're healthy and still growing.