What is the optimum level of dissolved oxygen in fshpond ........

Agriculture and Rural Development (Phase-I/II) Fisheries

What is the optimum level of dissolved oxygen in fshpond?

This questions was previously asked in

Nabard grade-A, Previous year Memory Based Paper (2023)

5 mg/l

2 mg/l

1 mg/l

2.5 mg/l

10 mg/l

- Dissolved oxygen (DO) is crucial for the health of fish in a pond.

- Option 1: 5 mg/l - This is considered an optimal level of DO in fish ponds. It supports the respiration needs of most fish and aquatic organisms.

- Option 2: 2 mg/l - This level is low and can cause stress or death in fish, especially over time.

- Option 3: 1 mg/l - This is very low, likely leading to fish mortality if maintained for long.

- Option 4: 2.5 mg/l - Also quite low, this level could lead to stress and is not suitable for sustained fish health.

- Option 5: 10 mg/l - Higher than necessary; while not harmful, it's more common in cooler waters and might occur less frequently in warm ponds.

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