starfish ID

I have been finding new things left and right lately which is wierd beause im always looking into my tank and i havnt added new LR in about 10 months...anyway i found a new starfish in there...im almost %75 positive its not an asterina because i have an asterinaload of them (sorry lame lol) so i know what they look like...its prob about as big as my thumbnail (keep in mind i have small girl hands lol) and its texture and pattern almost remind me of a pillow star...but not its shape...i can only see 4 arms. sorry the pics ar horrible...my camera would not focus on it even with the flash on but hopefully someone can make sense of this photographic masacre hahaha.

 

Google asteria stars and see if it looks similar.

 

This is an asteria star

 

nope i have hundreds of them in my tank and this guy is way way bigger and not even the same colors or texture...almost sure he is something else...just dont know what

 

There are several species of asterina. AFAIK, it's the only one you will find with four legs because of how they multiply by division (Mine all had between 3 and 6 legs), although I could be wrong. Either way, as long as you don't catch it munching on corals, etc., then it's most likely harmless (unless it grows too big to be safe).