Whats up with my cleaner shrimp?

[Coralgurl]

My bf is attached to a worm that showed up right after our cycle was complete...weird. We've got tons of stuff that has shown up that wasn't intentionally added, thankfully all good. Ive got feather dusters growing on my frogspawn. Seriously no clue where the plate coral came from. Saw it a whi,e ago, just looked like a shell so we left it, then it disappeared. Saw it again a week ago, thought it was a mushroom, but it kept moving, grabbed it last night and yup, it's a plate with tentacles. It's a bit bigger too, size of a quarter.