I am having a similar issue, with one of my apple snails. It has been quite active over the last few weeks and then all of a sudden it hasn't moved in a few days, I have even handled it with out it retracting fully into it's shell. Water params are 0,0,<10 with temp at about 76 slowly raising temp to 80. In the last week this same snail has laid a bunch of eggs.
I have smelled the snail and she is quite pottent smelling where as the other snail just smells like aquarium water. I'm pretty sure she is dead, the only issue i have is if she is dead wouldn't the other snail and fish be feeding on her?
I have smelled the snail and she is quite pottent smelling where as the other snail just smells like aquarium water. I'm pretty sure she is dead, the only issue i have is if she is dead wouldn't the other snail and fish be feeding on her?
Just citing an example that there is always the possibility a male can stress a female to death much like the fish although in the example, the size difference would be the issue.