good guys or bad guys?
In cleaning out my tank today I found these two "volunteer" snails.
I have brown algae for which I have a couple of Nerite.
So I have a couple of questions:
1) what kind of snails are they? The one has a very "traditional" round snail shell, and the other has an elongated shell. The elongated shell one also has a long tail or maybe called a foot, idk.
2) are they good guys or bad guys for eating algae?
3) are they good guys or bad guys towards eating plants? I'm mostly concerned about them eating my plants!
Thanks for whatever help you are able to give!!!