Hi, i noticed 2 or 3 (2 mpimbwe juvies and 1 larger burundi) that have suddenly developed this unusual mouth/lip . I noticed these fish did not have this previously and so believe it is a injury. The burundi that had this seems to have healed itself as I no longer see it anymore. Anybody have any experience with this before ? Is it caused by weak ligiments etc. or is something dislocated ? I just looked and it appears there are a couple more that have it. I have not seen any lip locking at all so not sure what is causing it. Any opinions are welcome.