Opisthobranchs ID - Slug?

[Insane Reefer]

Hey!
Found this neat bugger last night.

Sorry this pics stink

3/8" long. It is snail like up front - stalks and antennae, but it has an internal shell, with what look like tube worm curlicues on the back end of the "shell". Very thin covering of tissue/mantle covers this whole thing, shell and curlicues. Light beige to white in color with a very faint pattern in purple - sort of fractal in nature. Foot is white and grey, again with fractal patterning. It will rear up to investigate and move fairly quickly.

I do not believe it is a sea hare as it has the wrong profile and has no frills...

Any clues?

 

[Paintbug]

stometella snail, harmless little algae grazer, and will multiply in the tank.

 

[cstires]

Yep, that is definitely a stomatella! I have a lot of them, they are great grazers!

 

[Insane Reefer]

Thank
I figured it was harmless as it was having a good ol' time chowing on green algae.
I just like to know what I have.

If there is only one, what is the chance of reproduction? I read some Opisthobranchs are hermaphroditic...

 

[Paintbug]

if you have one theres a good chance you have another there somewhere. however, im pretty sure that its takes 2 for stomatella to reproduce, but im not a 100%.