So, two days ago I noticed a hole in his tail. The next day, I noticed two smaller holes. I thought it was one of the plastic plants that I currently have in there, so I took it out. Then today, the holes were looking a little bit bigger. I was concerned, but didn't have time to go and get some stuff for his tail (I don't even know what to get... help?) so I cleaned out his tank and changed out all of the water to make sure it was as clean as possible.
I cleaned everything from the sides of the tank, to the rocks and the bottom of the tank, to the plant, his car, and the filter. I cleaned EVERYTHING. I had to take him out and put him in a bucket until I was done. Didn't take more than a half hour.
When I came home, he was sulking in his bright neon yellow car. I offered him some pellets, but he wouldn't even come out of the car to eat them. He's only coming out of his car for air every two or three minutes, and then goes right back in there.
My boyfriend thinks he's mad at me because I had to chase him around with the net earlier. But I'm afraid that it might be something much worse...