Question

If water consist highest value of dissolve oxygen it is good or bad for aquatic life??

Answer 1

Well you tell us?

Explanation:

A common phenomenon in waterways these days is `"eutrophication"`. What is it? Agricultural run-off contains a lot of nitrogenous fertilizer, and this promotes the growth of weeds and algae in creeks and rivers....

Now during the DAY, the green plants, the algae, the water plants, are photosynthesizing, and are NET producers of dioxygen.... However, during the night, the algae are NOT photosynthesizing, and are NET CONSUMERS of dioxygen. And since the plant life necessarily represents the greatest biomass, the other life present in the waterway might be choked of oxygen....take that fish.

And so the question you ask in the opening is open-ended. We would assume that oxygen-rich water should support a large population of aquatic life. And it is fact that the polar oceans (i.e. colder, and thus in which dioxygen is more soluble) are still prolific fisheries.