Nerites don't seem to have a personality. Mysteries are funny and like to climb up the tallest thing in the tank and jump off and guide themselves down. Strongly suggest a Mystery but in a 5g you need live plants ,as they poo a lot.
Nerites really only want to eat algae and eat other things only when the algae runs short. You may not have enough algae. My Mysteries are spoiled to algae wafers and won't touch vegs.
I have some Zorro nerites and they prefer to stay out of the tank. I have picked them up off of the floor several times.
Consider the needs of your fish before acting on your desires.
Last edited by marshallsea; 09-24-2013 at 03:00 AM.