After all the dissolved oxygen is used by the fish, where does more dissolved oxygen come from for the fish?
Or do the fish die if you don't mechanically disolve oxygen in the water?
2007-03-25 12:26:42 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Goldfish and Betas can live in stagnant water. Some O2 will diffuse into still water from the atmosphere, and I think that goldfish can glup air if they need to.
I believe that most other types of fish need O2 to be added by mechanical means, since they are usually river fish that are used to living in running water.
2007-03-25 12:49:43 · answer #1 · answered by Randy G 7 · 0⤊ 0⤋
If all of the dissolved oxygen is used up, then the fish can't stay alive waiting for more dissolved oxygen. Dissolved oxygen usually gets into the water in two ways. Aquatic plants and algae give off oxygen as a by-product of photosynthesis. Oxygen and other components of air diffuse into the water's surface from the air. This mixing goes faster when wind "stirs up" the water's surface.
2007-03-25 12:35:25 · answer #2 · answered by ecolink 7 · 0⤊ 0⤋
yes the fish will except more oxygen is dissolved in the water mechanically.
2007-03-25 12:37:00 · answer #3 · answered by brisko389 3 · 0⤊ 0⤋