Fan critter?

[Joe del Rey]

My tank just cleared up after a mass bacterial bloom. And after that I saw a lot of critters so I'll post them one by one. Let's start with this one.

It has an orange base (probably its retreat place) and a fan shaped claw similar to what you see on the corals. Sometimes it retreats but most of the time it is fully spread to catch food. Size is around 5 mm.

I apologize for the poor quality image because this critter is super tiny.

 

[homer1475]

Barnacle.

 

[reef lover]

+1

 

[Joe del Rey]

Barnacle.

Thanks. Is it good or bad for the tank?

 

[homer1475]

Good for the tank(filter feeder), but unfortunately they usually do not last very long in our tanks

 

[Joe del Rey]

Good for the tank(filter feeder), but unfortunately they usually do not last very long in our tanks

Nice! Thanks for the info. I'll update if something happens.

 

[Joe del Rey]

UPDATE:
There are two of them now. They seem to do well