Feather Dusters or Hydroids?

[CrabsHaveClaws]

I have at least 10 of these in my tank. They are very small (2-5mm) and glow yellow under actinics, which make me worry they are hydroids. What do you think? (The one on the left is not the same, there is no yellow). To my eye they are slightly more vibrant than pictured.

 

[ISpeakForTheSeas]

Got any white light pics? It’s hard to tell exactly what the tentacles and bases/mouths look like under the blue.

That said, from what I can see, I’m inclined to think they’re probably all feather dusters.

 

[CrabsHaveClaws]

Ver hard to get clear photos because they are so small. One has retracted?

 

[EeyoreIsMySpiritAnimal]

+1 for feather dusters

 

[Reefkeepers Archive]

Featherdusters!