Yes.. they're fine. I have a golden mystery snail in my son 5 gallon betta tank an ivory with my daughters in a 4 gallon and my blue with mine in a 6 gallon. They are messy and I like to clean the gravel a bit more now that I hv them but they seem to entertain the Bettas to some degree. They dont clean the tank but they are a fun addition. My daughter marble HM did at first nip the snai but since then they've lived peacefully and no other incedents from the other tanks. (funny fact though... My sons betta decided the day he got a snail that he was ready to breed...his first bubble nest and has since then bubble nested... me thinks I have yet another confused Betta lmao!)
Last edited by Agent13; 05-13-2013 at 10:20 PM.