fish parasite

I have a pair of clowns that have been together a little over a year now. I'd say the male is 2 years old and female 3 or 4. They've been behaving very much like pre-spawn for the first time with the male clearing out a spot (picking up sand and moving it) and both clearing out areas and doing...

So hadn't noticed anything on my Bicolor blenny till today, but it appears that part of his color is fading in different spots on his body, most on one side. It's almost looks like it is slightly bleached? I'll try and attach a decent pic, but he's easily the hardest fish to get a good pic of in...