ID for this little Critter?

Just195

New member
I could not get a great picture because I was using my cell phone, but hopefully it will at least give somewhat of a visual. I've seen two in my tank and just want to make sure there is no concern.

I'll do my best to describe it... a first glance it looks like a tiny starfish with three of its arms and a flat side as if the other arms were not fully grown. Looking closely at it; however, it has the 3 obvious arm extensions and at the tail end are 3 more "arms" but they do not extend far enough out to form any kind of symmetry with the other 3 arms. You can recognize a front and back as the little guy always leads with the middle of the 3 large arms. It is white on the bottom and the top goes from white on the outside to a dark color in the middle.

I know its not a little brittle star as i have seen them in my macroalgae and nothing on the melevreef ID site is similar. I has such a likeness to a starfish but both of the ones i have seen have this "flattened 3 arm side." Any ideas?

It is in the middle of the picture.. again sorry for the bad quality.

Photo-0008.jpg
 
Maybe, maybe not. Some asterina's are harmless while others may munch on certain delicate corals and/or coralline algae. I have no idea how to tell the two apart other than waiting and seeing if anything bad is happening. I've got several I've seen pop up here and there in a 2.5g nano, but never had anything bad happening to the tank. No coralline on the glass, but the little bit of rock in there does have coralline all over it. So mine may be a good guy.
 
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