Looking for info on this cool starfish...

[Delphinus]

You've probably already seen this but this photo too good not to share. 2rd or 3rd hit hit after googling your guess at a species came up with this..



FWIW, I always thought stars fit into two categories: 1) We don't know what they eat but presume it's bacteria, slime, or algal films, or, 2) They're predatory.

Those in category 1 are things like Fromia, Linckia, etc. and amongt those, some will adapt to other forms of nutrition and do OK in tanks, and some won't. Those in category 2 are things like chocolate chip stars, and I thought that the little bumps in the texture were artifacts of their muscles used to help capture or ingest their prey.

So my guess is your corals are safe since we don't see the tell tale marks of it being a predatory star ... and that whether it adapts long-term to captivity is a guess but should theoretically stand the same changes of survival as Linckia's and Fromia's.

But just my guess.