black slug?

[RufRidn]

I just bought some ricordia and this was on the back of it. Any idea what it is and if its good to keep or if I should take it back to the lfs. Its black but kinda transparent when its under light.
http://img.photobucket.com/albums/v620/rufridn/IMG_1624.jpg

http://img.photobucket.com/albums/v620/rufridn/IMG_1623.jpg

[ClamIAm]

Thats actually a kind of snail that is usually not harmful. Stomatella I believe its called.

[RufRidn]

Ok, Thanks. In the tank it goes.

[rshimek]

Hi,

It is indeed a Stomatella varia, read about them here. (http://reefkeeping.com/issues/2004-05/rs/index.htm)