I have what appears to be a group of mystery snail eggs in my aquarium but I'm not sure. I do have 3 mystery snails (gold, black, blue) along with 2 zebra danios, 1 male betta, 2 otos. Everything that I have read has said that these snails lay their eggs above the waterline, but these are on the subtrate by their cave so I'm not sure if these are eggs or not. If they are eggs, is it ok that they are at the bottom or should I take them out?