Coleallensmom
Planted Tank Enthusiast
I have had three Zebra nerite snails in my tank for about three months now who are typically very active. In the last few days the largest one hasn't moved more than 2-3 inches in any direction. The most activity I've seen out of him was yesterday evening when one of the other snails happened to sneak by him. He quickly attached himself to the back of the other snail (Weird!) and hitched a ride half way up the tank before I took pity on the smaller snail and gently seperated them. Now this evening he is sitting there in the substrate with his trapdoor closed. Something I should be concerned about..or completely normal? Both of my other snails are behaving normally!