After Halogen passed away, we purchased a new betta friend Monday afternoon. The first day he was very shy and lethargic, sitting at the bottom of the tank.
The second day I couldn't find him. He hid almost the whole day. When I finally saw him, his tail was horribly clenched up, worse than when we had brought him home.
Today, he's no better. His gills are opening and closing erratically as though he's gasping for oxygen. He won't eat anything. I'm confident he's going to die.
Is there anything I can do? Or anyway I could... put him down? I feel so bad that he's suffering...