I.D.please

[crete456]

Resently I purchased some live rock for my 37 gal. FO tank but want to eventually convert to a reef tank...I noticed a small fan about 1/8" in diameter at night with my flash light...when I put the light on it bolts back into the rock opening about the size of a pin head...Is this a good sign that my rock is florishing and what is this...thanks Dennis

 

[WRASSER]

Any chance of you getting a pic or two?

 

[crete456]

Sorry Wras but I dont have a digital camera...I can only decribe it...it looks like an umbrella turned insideout but very small(1/8"in diameter) and near colorless( faint white)like a jelly fish with white tips...it retracts inside a pin size opening in the rock...I can only assume it comes out to feed but what it feeds on I have no clue since I only feed my fish a home made fishfood recipe I got on the internet...I'm wondering if the rock is thriving because this is my first attempt at placing live rock in my tank...thanks Dennis

 

[Anonymous]

Sounds like a featherduster or a fanworm to me.. - Did it look like one of these?

Norm