what is the max and min amount of disolved oxygen needed in water for healthy fish?

Answer 1

Depends on the kind of fish!

Trouts need an extreme amount of oxygen, while some other fish could do with 10% of the amount...

Answer 2

As it's hard to determine the amount of Oxygen dissolved in the water it is better to work on the surface area available for Oxygen transfer. Remember that the amount of Oxygen dissolved in cold freshwater, tropical freshwater, cold seawater and tropical seawater tanks will be different.

The link should help you with your calculations.

Some of the labyrinth fishes like the Betas will take Oxygen directly from the air above the tank. You lung fishes will drown if they don't have deep enough water, and enough space so they can get to the right angle to breath.

Answer 3

Between 5 and 8 mg / L are the optimum range. Higher concentrations can lead to oxygen bubbles forming on the gills, effectively choking the fish (to which young trout are extremely susceptible).

Survivable concentrations vary strongly between species, but the optimum range is what any intact water should have. (Note that there are plenty eutrophic lakes etc. _by nature_,especially in glacial deposit areas. They just aren't that healthy habitats for fish...)

Answer 4

Noooo you are able to no longer purely shop it interior the little cup they are offered in. they are not "their own bowls", they are for transport. The bettas can't be saved interior the fish tanks because of the fact they try one yet another. they desire a 5 gallon tank with a filter out and heater. they are surprisingly low maintenancee fish once you are trying this. you should substitute 25% of the water as quickly as each week on an identical time as cleansing the gravel with a gravel vac.

Answer 5

Depends on the kind of fish!