My apple snail, who I raised from an egg almost 6 years ago, has overnight developed a big air bubble that protrudes from his flesh and will not allow him to go in his shell.
He's NOT dead -- but I'm worried that he soon will be! Can anyone help? Has anyone ever seen this before? Does anyone know what's going on? There's nothing wrong with his water, food, etc. -- all exactly the same as always. Tank mates/decor have not changed in over a year, and they never bother him except to eat the algae off his shell.

He's NOT dead -- but I'm worried that he soon will be! Can anyone help? Has anyone ever seen this before? Does anyone know what's going on? There's nothing wrong with his water, food, etc. -- all exactly the same as always. Tank mates/decor have not changed in over a year, and they never bother him except to eat the algae off his shell.

