i am intrested in idenfyinfg this what i call the sheilded slug

[mnewby]

i have these and they come in on some live rock i picked up this last summer they seem dto be doing good and are really good alerge grazers so fare they havent harmed any of my tankes corals or soft coral or zooes i watched one spend hours crawling around and eating what little green i have on my rocks my coralline alge is doing very well

 

[Curtswearing]

Stomatella varia snails are great hitchhikers.

Also, because they don't go through a planktonic stage, they are able to reproduce in your tank.