i had a fairly large size of yellow polyps, and when i introduced them into the peppermint shrimp's domain, they went straight for em, it looked like they were digging the food out of the centers :notsure:
but there are 7 polyps left, out of like 30
peppermint shrimp are very curoius and will examine every little thing you put into your tank, after they are done playing with it, they wont bother it again....but some of my polyps didnt make it, just keep an eye on them