Question:
Which of the following is an example of an Anadromous fish (migrates from sea to fresh water to spawn)?
Which of the following is an example of an Anadromous fish (migrates from sea to fresh water to spawn)?
Show Hint
Use these alphabetical triggers to remember the directions:
- Anadromous = Ascending (from Sea up into River).
- Catadromous = Coming down (from River down into Sea).
- Anadromous = Ascending (from Sea up into River).
- Catadromous = Coming down (from River down into Sea).
Updated On: Jun 3, 2026
- Labeo
- Hilsa
- Anguilla
- Channa
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Question:
The question asks to identify an example of an anadromous migratory fish, which lives in marine water (sea) but migrates into freshwater (rivers) to lay eggs (spawn).
Step 2: Detailed Explanation:
• Fish migration can be broadly classified based on the direction of their movement between marine and freshwater habitats for reproductive purposes.
• Anadromous Migration: Marine fish migrate upstream into freshwater rivers to spawn. After hatching, the juveniles grow and migrate back down to the sea to spend their adult lives. Examples include Salmon, Lampreys, and Shad species.
• Hilsa (B): Popularly known as the Hilsa shad (Hilsa hilsa), this is a classic example of an anadromous fish. It lives primarily in the marine waters of the Indian Ocean but travels hundreds of kilometers upstream into major rivers (like the Ganges and Brahmaputra) to breed.
• Let us analyze the other options:
- Labeo (A): This genus includes Rohu, which is a purely freshwater fish belonging to the carp family and does not exhibit diadromous migration.
- Anguilla (C): This is the freshwater eel, which is a classic example of a catadromous fish. It spends its adult life in freshwater rivers and migrates to the deep ocean (like the Sargasso Sea) to spawn.
- Channa (D): Commonly known as snakehead fish, these are obligate freshwater fish found in ponds, rivers, and swamps, and do not migrate to the sea.
Step 3: Final Answer:
An example of an anadromous fish is Hilsa.
The question asks to identify an example of an anadromous migratory fish, which lives in marine water (sea) but migrates into freshwater (rivers) to lay eggs (spawn).
Step 2: Detailed Explanation:
• Fish migration can be broadly classified based on the direction of their movement between marine and freshwater habitats for reproductive purposes.
• Anadromous Migration: Marine fish migrate upstream into freshwater rivers to spawn. After hatching, the juveniles grow and migrate back down to the sea to spend their adult lives. Examples include Salmon, Lampreys, and Shad species.
• Hilsa (B): Popularly known as the Hilsa shad (Hilsa hilsa), this is a classic example of an anadromous fish. It lives primarily in the marine waters of the Indian Ocean but travels hundreds of kilometers upstream into major rivers (like the Ganges and Brahmaputra) to breed.
• Let us analyze the other options:
- Labeo (A): This genus includes Rohu, which is a purely freshwater fish belonging to the carp family and does not exhibit diadromous migration.
- Anguilla (C): This is the freshwater eel, which is a classic example of a catadromous fish. It spends its adult life in freshwater rivers and migrates to the deep ocean (like the Sargasso Sea) to spawn.
- Channa (D): Commonly known as snakehead fish, these are obligate freshwater fish found in ponds, rivers, and swamps, and do not migrate to the sea.
Step 3: Final Answer:
An example of an anadromous fish is Hilsa.
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