I know there probably isn't an answer to this but my Neon tetra is biting my Bettas tail. Any ideas of what to do? will my Betta end up with no tail? if so, can they survive without a tail?
Neons can be surprisingly nippy. You could still try adding a few more and see if that helps; otherwise you're going to have to separate your betta; he'll get very stressed and probably sick, if the neons keep bothering him