I've gotten those from two different stores and put them in two different tanks. First time I didn't even know. It came over on some plants. I saw it in my 55 goldfish tank after I put the plants in. I figured I'd let it live there. I'd see it every once in a while for about a month or so. Then one day I haven't seen it every again. Then I got plants for my 20g tropical tank from another store and I noticed the snail before putting plants in. Again I decided to let this little one in my 20g tropical tank and same thing. Noticed it for about a week and then haven't seen it since, about a month now. So I don't know if my fish eat them or if they die or what. I'd personally just put it in. If it was one of the known reproduction like crazy ones then maybe not put it in.