Identify Critter Please

[ATLJonathan]

Hello,

Does anyone know what this creepy crawler is? And is it bad or good?

 

[ATLJonathan]

Its got a hard shell on its back, and appears to be black.

 

[Sugar Magnolia]

It's a stomatella snail. A beneficial grazer.

 

[TigeBell]

Stomatella snail. You scored.

http://www.lionfishlair.com/hitchhiker/hitchhiker.shtml

 

[ATLJonathan]

Thank you!!! I put it back in the tank.