featherduster id

[Kyliegirl]

i had many of the common featherdusters in my tank, a population of over 20 on one rock which are white with brown stripes, but my fav feather duster is a single lonely feller, he is the most beautiful too. I found a picture of what he looks like, anyone know what it is called and how big they grow?

 

[LeslieH1]

The ones in the picture are Bispira brunnea. These reproduce asexually by splitting into 2 individuals. Unusual to have only one.