Chromis Jaw Problem.

[silentcivilian]

So, I dont know how to say this that well, but my one chromis when it goes to eat, it looks like its jaw unhinges.. but gets stuck.. ive never seen this happen.. it still manages to get some food, but not as much as normal.. Im going to link a video in here, hopefully I can get it to work, its 51seconds long, and you can see it best near the end of the movie clip.

Question essentially is, should I worry?

http://www.youtube.com/watch?v=fhH20V9y5g4