Question

Which one of the following is not a marine fish?

• A. Tuna
• B. Salmon
• C. Sardine
• D. Mrigal

Answer 1

The correct option is D

Mrigal

The correct option is D

The explanation for the correct option:

1. Mrigal is a common freshwater fish in South Asia and not a marine fish
2. It prefers fast-moving streams and rivers, yet it can endure high salinity levels.
3. Mrigal fish is one of three Indian main carp species widely cultivated in Southeast Asian countries.
4. It is indigenous to Indo-Gangetic riverine systems.

The explanation for the incorrect options:

Option A:

1. Tuna, often known as a tunny, is a marine fish species, and have a high commercial value as food.
2. Tuna is a wandering fish that can be found in all oceans around the world.

Option B:

1. Salmon are "anadromous," meaning they are hatched in freshwater and spend several months to years there before migrating to the ocean.
2. They return to freshwater when it's time to spawn.

Option C:

1. Sardines thrives in the productive waters of upwelling zones of marine, where currents bring deep, nutrient-rich seawater to the surface.
2. The Atlantic, Pacific, and Mediterranean oceans are rich in sardines.

Final Answer: Mrigal is not a marine fish.