Zebra nerite snails look sick. Any suggestions?
I recently ordered 6 zebra nerite snails through the mail with some fishes. When I first recieved the package all the bags seemed cold to the touch. But all the fishes survived but did look a little shocked at first. But my snail were all just hiding inside their shell. After acclimating them to the temp and drip acclimating the snails I put them in my tank but still didn't see any move. I thought they might just be scared from the shipping. After 24 hours only 3 moved but not far and were either turnt upside down or sideways with their bodies sticking out a bit. When I poke them they do go back into hiding in their shells. So I went to my lfs and got 1 tracked nerite as they were the only one they had. The tracked nerite seems to be doing fine and moving about the tank. Did I just receive a bad batch if zebra nerites or is something wrong with them? I have read that some nerites go into hibernation with change in temp but not sure if this is true. Anyone ever experience this? 75 gal Tank parameters 76degrees, 0 ammonia, 0 nitrite, ~ 20ppm nitrate, injected co2 but no ferts yet.