Question:
The fish, Schizothorax richardsonii is considered as a
The fish, Schizothorax richardsonii is considered as a
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Stenothermal = Narrow temperature tolerance (coldwater trout, snowtrout).
Eurythermal = Broad temperature tolerance (carps, tilapias).
Eurythermal = Broad temperature tolerance (carps, tilapias).
Updated On: Aug 20, 2026
- Eurythermal fish
- Stenothermal fish
- Anadromous fish
- Catadromous fish
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Fishes have different physiological tolerances to water temperature variations in their habitat.
Step 2: Detailed Explanation:
- Schizothorax richardsonii (commonly known as the Alwan Snowtrout) is a coldwater torrent-dwelling cyprinid fish found in the fast-flowing, snow-fed streams of the Himalayan region.
- Coldwater fishes require pristine, highly oxygenated water and have low tolerance for temperature fluctuations.
- They can survive only within a narrow, cold temperature range, which classifies them as stenothermal (specifically psychrophilic/cold-stenothermal).
- Eurythermal fishes (like common carp) can tolerate wide temperature ranges.
Step 3: Final Answer:
Schizothorax richardsonii is a stenothermal fish, corresponding to option (B).
Fishes have different physiological tolerances to water temperature variations in their habitat.
Step 2: Detailed Explanation:
- Schizothorax richardsonii (commonly known as the Alwan Snowtrout) is a coldwater torrent-dwelling cyprinid fish found in the fast-flowing, snow-fed streams of the Himalayan region.
- Coldwater fishes require pristine, highly oxygenated water and have low tolerance for temperature fluctuations.
- They can survive only within a narrow, cold temperature range, which classifies them as stenothermal (specifically psychrophilic/cold-stenothermal).
- Eurythermal fishes (like common carp) can tolerate wide temperature ranges.
Step 3: Final Answer:
Schizothorax richardsonii is a stenothermal fish, corresponding to option (B).
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