Multicolor polyp proplem

[kjboer7]

Ok this polyp is starting to lose the orange polyps but the green is thriving. All other corals are fine. Water is all with in range. Could something be eating on it. Livestock. 2 mocha clowns, pajama cardinal, cuc, any ideas.

 

[kjboer7]

Sorry forgot pic.

 

[54seaweed]

do they look like there being eaten

could be a nudi they blend in well