What is this?

[volitan]

I believe it is in the same family as the nudibranch. I have one in my reef system, as well. Mine is not multiplying, has not done any damage to the system, and only comes out when the lights are out. All it does is graze on algae.

[Mandosh]

Originally Posted by volitan

I believe it is in the same family as the nudibranch. I have one in my reef system, as well. Mine is not multiplying, has not done any damage to the system, and only comes out when the lights are out. All it does is graze on algae.

Same class as nudibranchs...both gastropods.

Stomatella varia. It's a herbivore and it's harmless. Great little algae eater.

[Nano]

Originally Posted by Mandosh

Same class as nudibranchs...both gastropods.

Stomatella varia. It's a herbivore and it's harmless. Great little algae eater.

+1 I have a few in my tank I thought they were nudibranches at first, but these guys are beneficial where as nudis are detrimental in most reefs depending on the variety! keep him like said above he's a good little algae eater!

[marie]

For future reference to IDing the wonderful critters that show up in your tank

http://www.chucksaddiction.com/hitchhikers.html