How do goldfish get damaged bladder?

1. Swallowing large objects: Goldfish are known for their tendency to swallow bits of gravel or other large objects that can block their digestive system. This can lead to a backup of waste and cause the bladder to become damaged or rupture.

2. Constipation: Similar to swallowing large objects, constipation can also lead to a blockage in the digestive system and put pressure on the bladder. This can cause the bladder to become inflamed or damaged.

3. Bacterial infections: Urinary tract infections (UTIs) and other bacterial infections can also cause damage to the bladder. These infections can be caused by bacteria that enter the body through the mouth, anus, or urethra.

4. Tumors: Bladder tumors are relatively rare in goldfish, but they can occur and cause damage to the bladder. Tumors can be benign or malignant, and they can either block the flow of urine or cause the bladder to rupture.

5. Physical trauma: Physical trauma, such as being dropped or hit, can also cause damage to the bladder. This type of injury can cause the bladder to leak urine or become inflamed.

If you think your goldfish may have a damaged bladder, it's important to take them to the vet as soon as possible. The vet can determine the cause of the damage and recommend the best course of treatment.