Question

why do fishes die due to the excessive water pollution ?

Answer 1

hey......
1.Fishes die due to water pollution. When harmful waste is discharged from factories to seas and other water bodies it makes the water poisonous. By this way fishes and aquatic life die
2. Also when petrol waste is discharged into seas it forms a layer on the sea.This layer prevents the sunlight to enter the sea , thus harming the aqautic Flora and fauna

Answer 2

the most common cause is reduced oxygen in the water, which in turn may be due to factors such as drought, algae bloom, overpopulation, or a sustained increase in water temperature. infectious diseases and parasites can also lead to fish kill. Toxicity is a real but less common cause of fish kill.