Any idea what this is?

[MarineDan]

Hi all,

Was having a little look at my live rock and noticed this small red thing coming out of a tiny hole in my live rock.. Every time I go near it it shoots back into the hole.. Any ideas as to what it could be?

Thanks

 

[MarineDan]

These are the best images I can get.

 

[Shep]

I have no idea to be honest, its kind of cool looking

 

[ReeferMaddness843]

Looks to be a red tube worm based on what I can see in the vid and pics. Harmless filter feeder. Been known to be wrong though. Lol. Anyone else have an idea?

 

[MarineDan]

Looks to be a red tube worm based on what I can see in the vid and pics. Harmless filter feeder. Been known to be wrong though. Lol. Anyone else have an idea?

Had a look on youtube and I think you may be right! If it is a red tube worm what do they actually do? Lol.. And are the harmful to the fish or aquarium in general?
Thanks for the reply

 

[ReeferMaddness843]

Not harmfull in any way. They're calcium bodies with the little "feather duster" inside. Just a filter feeder that picks up extra nutrience in the water. Pretty common

 

[Salty1962]

@Lionfish Lair could tell you for sure.