But I'm worried that he might kill it. I have him in an eclipse explorer tank and the way it's set up, I have to take it all apart to scrub the tank walls which have algae on them. Which is a pain because of the area I have it in. These olive nerites have done an amazing job in my bigger tanks and I'm sure one big one wouild do great in my betta tank but I wonder if he would bug it. I put a small common snail in there once and about 2 or 3 weeks later found just the shell so I'm assuming he ate it. These nerites are much bigger (big ones are just over the size of a dime) but would he still hurt it?