Hitchhiker ID…. Unknown Filter Feeder?

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Hypan

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I received this ricordea last week and it’s on a decent size rock (approx 4”x4”).
Dipped for 10 mins but looks like something made it.

Looks to be some sort of filter feeder. 5 tentacles I can see approx 2”-2.5” long each, they seem to be responsive to light when I shine a flashlight on them. If I touch them with a probe they are slow to retract. Only come out at night. Filter hairs are perpendicular to the main stalk. They can curl and retract back into a hole in the rock.

I haven’t been able to get a look at anything but the tentacles.

any ideas?
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Offer some mysis to it. If the arms curl around the food. Probably a micro brittle star fishing for food.
 
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