Social Feather Duster

Bispira brunnea

Identification	Small feather duster with a tan or brownish fan-shaped crown, typically 1–2 inches across. Found in dense colonies on reef rocks, often with many individuals emerging from the same rock face.
Maximum Length	2 inches
Origin	Caribbean
Minimum Tank Size	10 gallons
Reef Compatibility	Excellent

Behavior

Unlike the solitary Giant Feather Duster, Social Feather Dusters naturally form colonies of many individuals living together in a single rock. Can reproduce and establish new colonies in a mature reef tank. Hardy and long-lived compared to larger feather duster species.

Diet & Feeding

Filter feeder. Feeds on phytoplankton and fine particulate organic matter suspended in the water. Benefit from occasional additions of liquid phytoplankton.

Cautions

Provide moderate, consistent flow to allow feeding. Aggressive fish may nip at crowns. Will retract into rock when disturbed — this is normal. Do not scrub rocks containing colonies.