Question

There is a mass mortality of fishes in pond. what may be the reason

Answer 1

There may be several reasons for the mass mortality of fishes in a pond: Domestic sewage − It mainly contains organic matter, which is biodegradable. Microorganisms involved in theirdegradation consume a lot of oxygen and the BOD of the water body increases leading to the death offishes. Industrial ...

Answer 2

Hey mate here is your answer......


This answer is verified ✅✅

In a pond ,a mass mortality of fish may occur due to following seasons .

➡️ Passage of pesticide rich water from crop fields.

➡️Release of toxic industrial waste

➡️ Pouring of hot water from an industrial waste.

➡️Release of waste rich in heavy metals and Mercury.

➡️Blockage of gills of fish by some suspended pollutant such as oil.

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