ID Please!!!!

[wendymiller]

I just bought some LR yesterday and there is something on the rock that looks like an anemone .but it is very dark purple almost black and it only comes out when the lights in the tank are off. I cant get a pic because when I turn the lights on it goes back in the rock. There are some white lines on the "tentacles" that go into the "mouth". Anyone have a clue what this might be?

 

[demosthenes]

Sounds like Aiptasia. Do a search on how to eradicate it. If it's just an individual, simply scrape it off with a screwdriver. However, I would leave it, I like a more natural reef, and Aiptasia's a part.

 

[naclh2o]

I'm not sure, but I can tell you it's not Aiptasia. Does it ever move? Obviously it is not a zooxanthellae hosting creature if it only comes out at night, and hopefully it is a simple filter feeder or detritus eater. If it doesn't move, it makes me hopeful it is one of the above, but I really have no idea. NOT aiptasia though.

 

[wendymiller]

It hasn't moved yet. But I will keep watching it. It really does look like some kind of anemone. I've just never heard of one that only comes out at night. I thought they lived off of the light at least partially. Beats me I am clueless.

 

[bang guy]

Sounds like some type of feather duster worm to me.

 

[wendymiller]

Could be Bang but it is really big if it is. Ii is about 1/2 inch across and not sure how long. Thank you guys for your help.