I have a 115g 6 foot tank that is currently stocked with 2 clowns, 5 chromis and a yellow tang. I have a quite a few flatworms and I want to get either a yellow coris or melanurus wrasse to keep their population in check. I don't care about totally eradicate them, just don't want things to get out of hand with them. From what I have read it looks like these two are the best cases for possible flatworm feeders. My question is which of these would be better in a reef system? I have 1 cleaner right now and plan on getting a few more cleaners and possibly a few peppermints but I don't want them to just be expensive snacks for the wrasse. I also plan on having a pair of flasher wrasse in the future, what do you think would be my best choice between the yellow coris and the melanurus?