Anyone know what this is?

[LizWise]

Only out at night.. folds into itself during the day..

 

[Rosesrblu1]

Looks like aptaisa/glass anenome. Bad news!

 

[Engineer Brian]

That doesn't look like Aiptasia to me, but it's a little hard to see in that pic. I seem to always have an Aiptasia or two in my tank and they are out all day long.

 

[Flreefer]

Looks like a Corynactis or a Pseudocorynactis anemone. They stay relatively small, and are basically harmless, but will sting anything next to it, like any other Nem.

 

[Sniperhank]

Pseudocorynactis caribbeorum

Positive ID imo.

 

[Sniperhank]

Pseudocorynactis caribbeorum

 

[cashmoney6980]

Wow! That is one cool hitch hiker!

 

[LizWise]

Looks like a Corynactis or a Pseudocorynactis anemone. They stay relatively small, and are basically harmless, but will sting anything next to it, like any other Nem.

You are totally right!! Iam at week 2 of cycling my 14g nano reef.. I'm worried my ammonia will spike and kill this little dude.. Any idea how I go about keeping him??

 

[crister13]

Not really. I would just hope for the best. They actually are very hardy and live through cycles frequently.

 

[77mfan20]

Looks like aptasia. I'd kill it with apitasia x

 

[scottayy]

+1 flreefer and sniperhank

I've never seen one before but after comparing the pictures that's almost no doubt that's what it is. That thing looks so cool.