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Fish must have oxygen in the water to survive. How would a decrease in oxygen affect the fish in the aquarium? The variety of fish would increase. The number of fish would decrease. The number of fish would increase. The variety of fish would decrease.

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ShyzaSling

Answer:

The number of fish would decrease.

Explanation:

Ecological hypoxia can be described as a condition in which the oxygen level drops to such low levels in the aquatic ecosystem that it is no longer able to support aquatic life. In such a condition, the number of fishes declines at a rapid rate because fishes require oxygen as an essential element. Also, those fishes which do not have better adaptations to survive might get totally wiped out from the aquatic ecosystem.

ayeeanna

Answer:

The number of fish would decrease.

Explanation:

I took the test and got a 100%, meaning that I got all the questions right and this question was one of them. Hope this helps! :]

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