Nudibranch perhaps?

[Renton777]

Hello all,

I have posted a video of a critter that I had the opportunity to film. The focus gets better after a few seconds.

http://www.youtube.com/watch?v=qea_5RyA9z8

I am not sure what the little guy is, my educated (or relatively uneducated) guess is that it is a type of nudibranch. I have see this one in my tank on several occasions, but this is the first sighting in a while. While he is still rather small I would say he has tripled in size over the past month.

So, can anyone give a positive id?

 

[GerritM]

My guess is an Thuridilla sp. (perhaps Thuridilla gracilis):
http://www.starfish.ch/Fotos/mollus...sschnecken/Sacoglossa/Thuridilla-gracilis.jpg

 

[mndfreeze]

Have you seen what it eats since its been alive so long in your tank? I would love to have some nudi's that are sustainable but 99.999999999999% are so specialized for food you can't keep em alive.

 

[greenbean36191]

Yep, it's Thuridilla, but there's not enough detail to pin it down to species. The orange rhinophore tips are common to half a dozen species or so. Regardless, it's a harmless herbivore and a very neat one at that.

 

[Renton777]

Thanks everyone! While I have not really seen it eating, i can say that it has been growing steadily with out eating any corals or fish as my setup is still rather young (2.5 months) and until very recently had neither.

 

[Tankdiver83]

That is definitely a Thuridilla. Its really cool!

 

[emissary43]

neato!