Sick cleaner shrimp... anything I can do?

[Lego&Jacub]

I'd post this in the invertibrates section, but it doesn't look like anyone has posted there since 2008.

At any rate, our one cleaner shrimp has developed these growths on his body. Do you have any idea what it is? What we can do?

Sorry I know the pics are not the greatest, but he hides out in the shadows...




Any help is greatly appreciated.
Sandra