Dark small Seaslug/Nudi ID ?

[elvn]

Hi,

I found this small dark seaslug on a piece of coral skeleton in my 20g nano. I captured the seaslug to a hang-on tray with the coral skeleton as in the picture. The slug is the dark fleshy thing in the middle. The slug has two antennae it uses to probe around ahead of it sometimes when its moving. It also has an lighter opening in its back which is why I thought it might be a slug instead of a nudibranch. Overall it is thin like a pancake, and smaller than a penny. Probably around the size of your pinky fingernail.
Any ideas? I'd hate to kill this little guy but I'm assuming it eats sponges since the 20g nano I foung him in has several nice sponges in it - a large orange tree sponge which I've had quite awhile, 2 chili 'corals' (nepthygorgia) I've had longer, and just recently a few ball sponges which he may have hitchiked in on. The only other corals are yellow polyps and red mushrooms.

Thanks for any input and/or detectivework

http://www.3dalchemist.com/images/reefpics/seaslug-hitchhiker_1.jpg

 

[npaden]

I'm betting on a Scutus.

Here is a link to them on the sea slug forum:

http://www.seaslugforum.net/scutus.htm

FWIW, Nathan

 

[elvn]

Someone gave me a link to a possible ID of the slug. Seems like it might be it so far. I'm going to read the whole article.

Seaslugforum Scutus sp.

 

[Len]

For the benefit of those who weren't logged on to our chatroom, this was the ID posted in #reefs by npaden:
http://www.seaslugforum.net/scutus.htm

 

[elvn]

Thanks Npaden ! .. 'n guys

Scutus snail has been put back into the nano.. :wink:

 

[elvn]

The snail is doing great I see him out regularly and he doesn't seem to be doing any harm to anything in my 20high nano. Neat little critter.