Yes, a goldfish's respiration requires Oxygen in order to work. Without oxygen, the fish's body could not perform essential bodily functions and would thus cause the fish to die. Oddly enough, if you were to put a goldfish in pure oxygen then it would still die. This is because it's gills need water in order to receive oxygen molecules.
Well, considering that goldfish do not breathe air, they can live without it for as long as their normal lifespan might happen to be. Some goldfish only life for up to about a year and a half, while others can life for as long as 25 years or more. All without taking a single breath of air.
In theory, no. Goldfish are aquatic animals meaning they live in the water. They cannot be out of water for long periods of time without dieing due to lack of water. With that said, Goldfish cannot fly through air. If you threw a goldfish in air itd might be considered "flying" but in reality its most likely to die. Goldfish do not have the natural ability and talent to fly through air. If you built a tank that can support water and fish in the air and fly it then they can fly using that device, as we fly using a helicopter,jet,plane, etc.
Change its water every day.
The same reason you run more actively with air in the atmosphere. Without air, and therefore oxygen, you and the goldfish will suffocate, making it difficult to swim or run.You take in oxygen through your lungs; the goldfish takes in oxygen through its gills.
because they fill up with air and the top of its head is heavy
No Goldfish do not normally die after they spawn. Goldfish can live and spawn regularly for over 50 Years.
Then the goldfish will die.
Without proper care, goldfish will die slow suffering painful deaths unfortunately. This is why it's best not to get a goldfish unless you can commit the time and money into a large tank, proper filtration, and weekly maintenance.
Usually when they are about 2-3 years old. Goldfish can also die if you don't feed them enough, or too much. When goldfish are not kept in a clean habitat, they can get sick and die. Make sure to clean your goldfish tank at least once a week. Remember, goldfish mainly die from aging
Do not, no matter what put a goldfish and a betta together unless you want the goldfish to die!!!
It depend's on how the goldfish is being treated.
A goldfish may not physically explode if over-fed, or if too much air becomes trapped in their swim bladder as they are more likely to die from constipation or impaction before they could explode