Okay, so I posted a few weeks ago about the baby mystery snail I found in my tank and everyone said (as I assumed) there had to be more... well there were lol. Oddly though the one I saw last week is much bigger than the others and he is DEFINITELY a mystery snail vs the other who look more like pond snails (I only saw them briefly when doing a W/C and rearranging plants and wood yesterday). So now my question, the one who is definitely a mystery snail is yellowish while the others are all dark black (if they are pond snails I will put them outside in the big pond ASAP) will they stay this color even if they are mystery snails or do their colors change as they grow? The four (now three one was mysteriously sucked out of it's shell) that I have are all either yellow or dark green. So, is it possible to get any other colors beside those two? I know I've seen (and msjinxed has) purple and other colors how do you end up with those colors? Thanks for any answers I appreciate it as these are my first true mystery snails!