Cleaner Shrimp eating Euphyllia?

[Ritual Aquatics]

All,

Have a 25G mixed-reef tank with a large selection of SPS that's been running for over a year now, all corals extremely healthy, bright, and big. Every 2 months or so, over the course of a week, one of my euphyllia will slowly shred to pieces. Parameters are really solid, Nitrate runs about 9ppm, Phosphate .12, Ca 430-440, Alkalinity 9.5. I have found no evidence of worms on any of these corals, so my thought goes to my skunk cleaner shrimp? Has anyone had experience with theirs attacking specifically euphyllia? All my other LPS is totally unharmed, so it seems oddly specific to hammers/torches/spawn.

All input appreciated!

 

[exnisstech]

I've had cleaners rip food out of the mouth of lps but not eat the coral itself. I wonder if the coral is dying and the shrimp is attracted to the smell? . Lps has a pretty strong odor when dead.