Question

what are the problems faced by the fishes in rivers sea and oceans

Answer 1

Fish face losing their ability to smell danger as the ocean grow more acidic, new research has revealed.

Answer 2

 problems faced by the fishes in rivers sea and oceans
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 problems faced by the fishes in rivers sea and oceans are as Follows 

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1) The Garbages which are thrown in seas and oceans affect the water 

2) When the Fish drink the Affected water then they cause diseases 

3) Fisherman when going in Oceans, And when they catch fishes then the fishes are affected