Swim Bladder Disease
Symptoms
Swim upside down.
Cause
The spinal nerves that control balance being hindered is considered the cause for the fish to swim upside down.
This disorder is commonly known to be seen in globoid goldfish, such as oranda goldfish or fringetail goldfish. This disease is no contagious to another fish.
Countermeasure
So far, no effective way to cure completely.
But this disease is commonly occurred while the water temperatures is low, It is known to effect on early stage of disease if rising the water temperatures to 25℃.
Furthermore, at this condition, adding 0.3% saltwater is effective.