Best answer
Swim bladder disease
People also ask
Why is my pet fish swimming upside down?
Your pet fish can swim upside down because of disorder of swim bladder, nitrates in water, bacterial infection, constipation, constipation, dirty water, and physical injury. We have explained all these reasons here, along with the best methods to save your fish.
Why is my goldfish swimming sideways?
Trauma or other risks can affect the swim bladder also. This is most common in bulbous fish such as the goldfish, but it can occur in any species with a swim bladder. In addition to observing the fish swimming sideways, it is possible to look at other symptoms of swim bladder disease.
What does it mean when a fish floats on its side?
The swim bladder is a gas-filled internal organ that fish use to regulate their buoyancy and move up and down normally in water. So, when something affecting it, it can cause a fish to float upside down or on swimming on its side, which are unmissable symptoms of swim bladder disorder.
Why is my fish surfing up and down?
If there is any issue in the tank, fish will start surfing up and down, which is called 済lass surfing.?If your fish is continuously showing this behavior, you need to address this before more severe problems like injury or illness arise.