But then again it could be
This would be a great find
The Fountain Feather Duster is the rarest of the beautiful feather dusters. They have beautiful red and yellow large fan-shaped crowns, (radiole's). The Feather Duster uses the radiole to filter out small floating organisms, which it directs toward its mouth, located at the center of the crown. It protects its segmented body by secreting a parchment-like tube to cover itself. When it is disturbed, it can quickly pull in its radiole into the tube. If it is severely stressed, it will discard its crown, growing it back later. The Feather Duster is usually found in the coral rubble at the base of the reef aquarium, with some of the rubble being incorporated into its parchment-like tube.. Size: 5" to 6"
Or this
Bali provides us with the beautiful, easy to keep, Red/Pink Feather Dusters. Like it's larger Hawaiian cousin, it protects its segmented body by secreting a parchment-like tube to cover itself. When it is disturbed, it can quickly pull in its radiole into the tube. If it is severely stressed, it will discard its crown, growing it back later. The Red/Pink Feather Duster is usually found in the coral rubble of the reef, with some of the rubble being incorporated into its parchment-like tube. Size: 2" to 4"