Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Two good shouts there, but I just had a Google and I seen a good few possible matches under Marginella. Only a couple possible matches at different images of Olividae snails.
When in doubt take it outI'm going with Marginella snail as well. They are carnivorous and predatory. I would not put it back in the tank.

From what I have read they will eat what they can catch. Like clams, other snails, or just left over food from what you feed the tank.I've pulled 7 out the last two mornings, for a total of 14...in two days...! that seems like a lot to me.
Someone mentioned they are "carnivorous and predatory" what is usually on their menu? Anything alive/dead as long as its meaty? Or are they more selective?

