Killer Starfish
I was lucky enough to get a bunch of these from another hobbyist who I bought some corals from a few months ago. He was having some STN issues and I think this is why - I have found these munching on corals & they don't seem to care if it's an acro or monti - I have found them along with their damage on both. They hung on and were missed in the dip process & to tell you the truth I just thought they were regular harmless astrea starfish but as I have found out the ones with black patches are not sps friendly. Here's a few I pulled out of my display yesterday.
