If gobies get comfy, they can do some damage with the way their jaws work. Huge gape they have when posturing.It would appear that the midas blenny has been bitten, it could have just got damaged but it is a big mark, dorsal fin and onto the body.
The only thing with a mouth that big is the engineer goby?!
Seems ok.




IF you didnt have so much good stuff to graze and feed on maybe lol Hey why are you not eating the hot dog and chowing down on steak? 

