Green looking slug?

[neotrin17]

A question....today after 4 week having my rock I find this green...kinda clear looking slug looking thing. It has like spines on it, not stiff, just like flowing things. What is this?
It is just munching on stuff that is on the rock? Is he good or bad?
Thanks

 

[lionfish28]

Its a nudibrach or something like that.Dont kind it will harm anything.

 

[alison]

:happyfish I agree, I believe it is a nudabranch. Those frequently come with live rock. If he's survived this long he probably only eats sponges or algae most likely, but some nudibranches do eat good stuff, so just keep an eye on him. Hope this helped. alison

 

[mr. tuna]

Does he kind of look like this but clear?
because as lionfish said, he can be a
nudibranch as the one i have shown below..

 

[neotrin17]

Ummm not so much. He is only about .5 inches long if that. He has a hump in the middle of his back, looks like where he houses is so called internal organs. He things sticking out all over him. He is very opague (sp) though. I will try and snap a pic when I find him. He seems to just munch on algae, but it is like I said, I am wondering if he hatche or something. It was the first time I saw him after 3 weeks.
I would guess a nudabranch also though.

 

[firefish3]

it sounds like a lettuce nudibranch look under nudibraches invertebrates lettuce nudibrach of saltwaterfish.com

 

[neotrin17]

I am thinking that maybe it could be this, but just as a small small one. Lettuce branch arent as clear usually. You can literally see thru this one and see the insides moving around. I have yet to see him again after last night.
He could certainly start eating the hair algae that I is currently taking over the tank! It is amazing how that stuff just grows over night!

 

[nudibranch]

Just ventureing a guess but possibly a Lettuce Nudibranch (See SWF.com invertebrates for pic)? I don't have any idea specifically but definately sounds like a Nudibranch.