Black Ramshorn Snail

This snail died less than 72 hours after it went into the aquarium.There are a dozen or so other Ramshorns in there as well as other creatures. This is the only one to have died so far. He was alive and kicking when I received the package. He went through the same acclimation process as the shrimp that I also ordered and seemed fine for the first couple of days. I waited a while to write this review thinking maybe he was just in some sort of hibernation but it's been 5 days so I'm pretty sure he's gone.