Ganges river dolphins more than double near Bhagalpur

Published · Researched 2026-09-22

What happened (dated facts)

A 2026 report puts the Gangetic dolphin estimate in the Sultanganj–Manihari stretch near Bhagalpur, Bihar, at around 215 — up from about 95 in 1998.
Around 200 dolphins were recorded in the Vikramshila sanctuary area in the 2025 survey (Patna Press, 2026).
The Gangetic dolphin is India's national aquatic animal and endangered; the Bhagalpur stretch is one of its key habitats.
Water-quality concerns in the Ganges remain; the increase comes despite them.

An endangered national icon has more than doubled in a key stretch over 25+ years of monitoring — a measured population gain.

Covered in Bihar regional press; a broad Instagram curator lead was not located (gap disclosed).

None captured (comment detail was not extracted); per method, none invented.

Tier: 2
Primary sources: Patna Press (2026) — https://patnapress.com/ganges-river-dolphin-population-bhagalpur-sultanganj-manihari/
Social sources: none located (gap disclosed).
Positivity check: passes with caveat — the trend is positive but the primary survey source was not directly reviewed; water-quality concerns are disclosed.

Fact	Value	Source	Date
2026 estimate (Sultanganj–Manihari)	~215	Patna Press	2026
1998 baseline	~95	Patna Press	2026
2025 sanctuary survey	~200	Patna Press	2026

The primary survey source (Wildlife Institute of India / forest department) was not directly reviewed; figures rely on press reporting.
Survey methodology comparability between 1998 and 2026 was not assessed.
Ganges water-quality concerns persist alongside the population gain.
No Instagram/Threads/Facebook curator lead was located (social-first gap).