Recently, my wild-caught Olive Nerites have been laying eggs like crazy. I know my tank is freshwater, so how could this be happening? I heard they only reperduce in brackish or salty water. They were acclimated from a brackish marina near where I live, where they have a steady population about two months ago. I put around seven in there to clean the algae in my planted betta sorority. (The tank is cursed with an obscene amount of algae. At least 4 different kinds, as well.) They've laid a growing amount of eggs and my main question is- where do I go from here?