I think it depends on what type of fish you have I have a Betta fish and I take about a quarter of the water out then fill the rest up with clean water once a week.
A dead fish can start negatively impacting water quality and other fish in a tank within a few hours. It is important to remove the dead fish promptly to maintain a healthy environment for the remaining fish.
5000 degrees do the fish stay nice and warm. I'm just kidding. You do not boil water for your fish tank but if your wondering water boils around 220 degrees
20 minutes
Yes a Betta can go to the bottom of a tank and stay there for quite some considerable time. The length of time the fish would be capable of remaining before surfacing and taking a breath of air would vary depending on various factors including temperature of the water.
in their tank
Tropical fish stay at the bottom of the tank when the water is changed.Its because fishes feel a change in water, like the temperature and pH value, due to which they get stressed, so they decide to remain in corner or at the bottom of the tank, until they feel they are comfortable.
About 30 to 40 seconds but with an oxygen tank it just depends on the tank
15 minutes
This is dependant on their care involving tank size, feeding, water parameters, water quality, and tank mates
Fish make bubbles at the top of the tank because they release excess air from their swim bladders, which helps them regulate their buoyancy and stay afloat in the water.
Fish can typically survive without a filter in their tank for a few days to a week, depending on the size of the tank, the number of fish, and the water quality. However, it is important to provide proper filtration for the long-term health and well-being of the fish.
A big fish tank is as long as its been built. 'Big' is a subjective term. Ask yourself, how long is a big fish tank, to me? That is where your answer lies. For me, a 'big' fish tank is anything over at or over 4 feet long.