Is my mystery snail dead?
I got him from PetSmart on this past October. He lives in a roomy tank with a filter, heater, and my betta fish, and he has always had enough to eat. Last night I observed him floating at the top of the tank, near my plant. When I got closer I saw that one of the plant's leaves was actually stuck in his shell. So I got the leaf out of his shell, and he was still floating at the top. I went to sleep, and this morning he was still there. So I took him out of the tank, thinking he was dead. But then I wondered ifhe was really dead, since I could see that he was still in the shell, or at least part of him. I put him back in the tank and this time he sunk to the bottom. Now I'm waiting to see if he'll get out of his shell. Should I be worried? Did the plant hurt him? Should I just take him out of the tank now so he doesn't pollute the water?
I don't see his "door" at the entrance to his shell
Do you think I should quarantine him for a while?