1. Indigestion: It is possible that goldfish lose their swim bladder when eating because of indigestion. If the breeder feeds them too much indigestible food, these foods will accumulate in the stomach, and after a long time, they will squeeze into the swim bladder, resulting in imbalance.

2. Eating too fast: It is also possible that goldfish lose their swim bladder when eating. If goldfish eat too fast, gas will easily enter the body and lose their swim bladder.

3. Hard food: Goldfish lose their swim bladder when eating. It is also possible that the food fed is too hard. If the food is too sharp, it is easy to scratch their internal organs, and the wound is inflamed, which will lead to the loss of swim bladder.

1. Lower the water level: After goldfish's swim bladder loss, breeders need to lower the water level first, which can alleviate their swim bladder loss.

2. Change water: Breeders also need to change water for them. The amount of water should not be too large, and it should be controlled at one third of the total water quantity. It is best to install a circulating filter to clean up the impurities in the fish tank.

3. Stop feeding: If the swim bladder is lost due to improper feeding, the breeder needs to stop feeding first, so as to prevent them from losing their swim bladder more seriously. They should also be fed more anti-inflammatory drugs to avoid wounds and bacterial infections.

4. Install splints: If the swim bladder loss is serious, the breeder should also install a splint for them, which can keep their bodies balanced.