These popped up this morning or well I noticed them this morning, first thought was they are micro brittle stars but also could be some type of worm. I have only a few, fish, common/caribean star, snails, hermits, cleaner shrimp, pistol shrimp. I’ve only used a small piece of live rock from my LFS but have recently removed them. I also have 8 small corral frags that I’ve dipped before placing in tank. Let me know what yall think!