Hello. Does anyone know if lighter color Mystery Snails, such as Ivories are more photosensitive? Or is it just an individual thing? I have 5 snails. The 3 Nerites don't care about anything going on around them. The Blue Mystery is usually always active in the daytime. Took him a while to adjust to the tank, but he did. Pretty much every morning he's asleep at the surface, light comes on, away he goes. My newer one however, a larger Ivory female seems to hate light. She stays hid out the majority of the time. As soon as light comes on she goes to the same hiding spot every time. You can even see her visibly flinch when just the blue night light comes on. So, what gives?