In the wild they bite onto acorporas at nite to hold themselves in the flow,while they sleep.Frank my file fish has NEVER ever touched any sps in my tank...duncans is a different story,they must look like giant apatisia to him. Lol
yup and this is the reason they dont mix with carpet anemones also juvies are more nippy in my experience with them:P but polyps are polyps to a file