Detailed Explanation:

Answer: Option 1 — Golden Mahseer

The Golden Mahseer (Tor putitora) is a species of large freshwater fish, not a bird. Often referred to as the 'Tiger of the Water', it is native to the Himalayan region and inhabits the rapid streams and rivers of the Indus, Ganga, and Brahmaputra basins. It is recognized by its large golden scales and is currently listed as Endangered on the IUCN Red List.

✅ Option 2 – Indian Nightjar: A nocturnal bird species found across the Indian subcontinent, belonging to the Caprimulgidae family.
✅ Option 3 – Spoonbill: A wading bird characterized by its distinctive spoon-shaped bill, found in wetlands and marshes.
✅ Option 4 – White Ibis: A wading bird with white plumage, commonly found in wetlands and coastal regions.

📝 Short Notes: Indian Wildlife Species

• Golden Mahseer (Tor putitora): Large freshwater fish found in Himalayan rivers; known as 'Tiger of the Water'; IUCN status: Endangered; threatened by overfishing, habitat degradation, and dam construction.
• Indian Nightjar: Nocturnal insectivorous bird; cryptic plumage provides excellent camouflage; found in dry scrublands and open forests.
• Spoonbill: Includes species like Eurasian Spoonbill; feeds by sweeping its spatulate bill through water; inhabits wetlands and shallow water bodies.
• White Ibis: Includes Black-headed Ibis (Threskiornis melanocephalus); wading bird found in wetlands; feeds on aquatic invertebrates and small fish.
• Conservation Significance: All these species are indicators of ecosystem health; wetland birds indicate water quality while mahseer indicates river health.