Can someone tell me what is is?

[Debbie W.]

I noticed this in my tank tonight and have no idea what it is or how it got there. Anyone know what it is? Thanks!

 

[Crabs McJones]

Welcome to R2R and thanks for signing up

#WelcometoR2R

That is quite the unusual little critter you've got there. Any chance at a better picture as I am unsure.

 

[Debbie W.]

Thanks for the welcome! Here is a side view if it. You can cee the size in comparison with the alveopora.

 

[NY_Caveman]

Thanks for the welcome! Here is a side view if it. You can cee the size in comparison with the alveopora.

Looks like a nudibranch to me, but not one I have seen before.

 

[reef lover]

#reefsquad

 

[TheEngineer]

Does it move or does it stay in that spot?

 

[Crabs McJones]

Are these pictures of it on your rock or is it on the glass? I'm stumped. If it's on the rock I'd guess anemone of some sort that's closed up but has tentacles hanging out.

 

[Retro Reefer]

I agree with crabs, looks like a anemone.. keep a eye on it and see if it opens.

Here is a anemone that’s not fully open, looks very similar to your picture...

 

[BedrockIOMC]

Could it be a Duncan? very small one of some sore? have you put anything new in your tank lately?

 

[KJ]

Looks like a nudibranch to me to.

 

[Debbie W.]

Does it move or does it stay in that spot?

I just noticed last night so not sure if it moves yet. The tenticles do move around.

 

[Debbie W.]

Are these pictures of it on your rock or is it on the glass? I'm stumped. If it's on the rock I'd guess anemone of some sort that's closed up but has tentacles hanging out.

It is on the rock. It's so strange.

 

[Debbie W.]

Could it be a Duncan? very small one of some sore? have you put anything new in your tank lately?

I have Duncans on the other side of the tank and I havent added anything in quite a while.

 

[NY_Caveman]

The first picture looked like a closed up Anemone to me, but in the second and third the gangly parts looked like a cerata from a nudibranch. Then I look at the first again and the bottom part looks like it could be the front rhinophores (the U-ish shape before it goes to a point). That assumes it moves. If it does not move, it is likely an anemone, but not an Aiptasia and probably not a Mojano.

 

[NY_Caveman]

@saltyfilmfolks you like weird stuff. Any thoughts on this critter?

 

[Crabs McJones]

The first picture looked like a closed up Anemone to me, but in the second and third the gangly parts looked like a cerata from a nudibranch. Then I look at the first again and the bottom part looks like it could be the front rhinophores (the U-ish shape before it goes to a point). That assumes it moves. If it does not move, it is likely an anemone, but not an Aiptasia and probably not a Mojano.

I know right lol, I cant decide either

 

[sfin52]

My first was a nem but now not so sure.

 

[Ranjib]

Its an anemone, closed up.

 

[saltyfilmfolks]

Yea. Does look like a weird lil nem.

 

[Neoalchemist]

Being a hitchhiker, it being an anemone makes sense because a nem hitchhiking would likely be bleached like yours appears.