But I never bought a Feather Duster!

[Miami Reef]

The live rocks are very mature, but I never in my life bought a feather duster. I noticed this new guy and I’m very happy. Is this a real feather duster? Do they reproduce in an aquarium? How did this happen?

 

[Rybren]

They are very common hitchhikers in our reefs. Depending on the types of fish you have, they may or may not flourish. Some fish love to eat them.

 

[Miami Reef]

How big can I expect these to grow? Will they be like the ones at the LFS? Also, I have many more even tinier ones in a Custer on a different rock. A picture won’t even show it clear enough.

 

[ca1ore]

There are many different species - some tiny, some large.

 

[reef_daddy]

Are these considered pests?

I think I have one in my QT and I’ve been holding off on adding the coral it’s attached to into my display tank.

 

[madweazl]

How big can I expect these to grow? Will they be like the ones at the LFS? Also, I have many more even tinier ones in a Custer on a different rock. A picture won’t even show it clear enough.

What you see is likely the size it will remain (provided something doesnt come along and eat it).

 

[Rybren]

Are these considered pests?

I think I have one in my QT and I’ve been holding off on adding the coral it’s attached to into my display tank.

No, they are beneficial filter feeders.