Anyone knows what this is? ID?
 

Hi all!
I recently found one of these sort of snail or something in my tank. Dunno what it is! Anyone know? It mostly comes out at night. I saw a big one and then 1 week later, I had like 40-50 of these babies crawling around my tank! I guess it spawned or something without me knowing! Would most appreciate anyone letting me know if it's good or bad for a reef tank! It looks harmless cuz I see them grazing on the glass and live rocks for algae.

Stomatella snail

Thanks reefwars! Do you know if it is good or bad for a reef tank?

IMO they are bad only for the reason they breed easily, they are however harmless in a reef:)

Thanks for your help!! Much appreciated! :)

There population will depend on food readily avalible.

Thanks for the info!

I had a few in my tank and found they were good algae grazers. Mind you I had a big spaghetti worm out break so I cut back feeding and haven't seen one in a few months.

I actually have a aiptasia outbreak right now! giving me a headache! trying to kill them with aiptasia x but keeps coming back!

i have only one of this snail it eats all the alage