- Kingdom: Animalia
- Phylum: Echinodermata
- Subphylum: Crinozoa
- Class: Crinoidea
- Order: Comatulida
- Family: Antedonidae
- Scientific name: Antedon bifida
- Norwegian: -
The most obvious difference to the very similar, but slightly larger A. petasus, is the number of feet (cirri). The rosy feather-star has approximately 20, occasionally as many as 30 cirri attached under the central plate. The ten arms are less than 10 cm long. The color is very variable, common color combinations are deep purple, yellow and orange, often in mottled or spotted patterns.
As most other feather stars, it is capable of "walking" around on its legs.
The rosy feather-star seems to prefer hard, rocky substrate on depths between 5 and several hundred meters.
This feather star is registered from the Shetland Islands and Nordland, Norway in the north to Portugal in the south.