It looks like some of the cases of hole in the head disease I have seen online. I am not experienced with this or cichlids so someone else can prove me wrong? Check some of the pics here
When you see the kind of space JDs (or any cichlid), for that matter live in, in nature..... any of the puddles we deem as adequate or find acceptable as aquarists, seems paltry.Now I want to build a much bigger aqaurium lol. Cool video.