Maroon Clown with a bleached/faded jaw

[c0nspire]

ive noticed that my maroon clown (that ive had for about 2 years) has a bleached/faded lower lip, wondering if maybe this might be a sign of something, To my knowledge i have not noticed it before. Also when i went to feed them tonight he didnt eat much, 1 or 2 mysis shrimp, he usually prefers blood worms so i thawed a cube and placed some in the tank to which he just ignored.
tank parims are:

ph 8.2
sg: 1.0235
ammonia - 0
nitrite - 0
nitrate - 20ppm
I also did a 50g water change today.

The tank is a 180g and the tank mates include:
white ribbon eel
dwarf lion
foxface
kleins butterfly
lawnmower blenny
porcupine puffer
lipstick tang
bi color angel
a frogspawn
and a brain coral

I will try to grab a picture of him.

 

[SkullV]

I wonder if she went to nip at the lion or rabbit fish and got stung. Is it raised up at all or just discolored? If it's just discolored it looks like a sting to me.

 

[c0nspire]

just discolored, shes not really opening or closing her mouth at all, pretty static position at all times.

shes been with the lion for just over a year, and with the rabbit/fox for 3 months now.

shes swimming fine, no scratching or odd behaviour, no hiding, just wouldn't eat tonight, but if its a sting and its sore that would be understandable.