Unknown Critter living in LR

[crazyj78142]

Good afternoon to you all

We decided to re-arrange our live rock this weekend and I noticed this black shadow secreting a small substance from 2 appendages. The side appendages look leaf like and there is an appendage in the middle with ridges on top. It appears like a tongue between 2 leaves. I have attached 3 pictures and on 2 of them you can see the secretion of a small white substance. Any help would be appreciated.

 

[Connie]

I'm stumped. :bump:

 

[crazyj78142]

Thanks for looking though. The closest thing I could think of from research is a nudibranch but it appears attached inside the little hole. I am going to try and take pictures inside the tank and see if I am able to get better pictures.

 

[SirKevinD]

Man, thats pretty crazy. From the pictures it looks like a small octopus or something. Thanks for sharing.

 

[crazyj78142]

Here are more pictures. It actually closed up and appears to be a type of mussel. This section of the live rock use to be the bottom before the rearrangement of the rocks.

Any ideas based on this?

 

[xthunderx]

It's hard to tell from the pictures, some kind of muscle sounds right. Any chance you can get better pics?

 

[crazyj78142]

 

[crazyj78142]

 

[crazyj78142]

 

[Reefing Madness]

small clam or muscle looks about right.

 

[crazyj78142]

Sweet!! Thanks for helping out. The tank is about 3 years old, and we have never noticed this critter till today.

 

[Ginu]

Ive got at least two of those in my tank... the are small clams and I don't think they are harmful at all.