Gharials: Critically Endangered Crocodilians and Conservation Welfare

Gharials are critically endangered fish-eating crocodilians of the Indian subcontinent whose populations have declined by 98% since the 1940s, with remaining individuals facing threats from river habitat degradation, fishing gear entanglement and egg harvesting.

Key Facts

Gharials once ranged across river systems throughout the Indian subcontinent; they are now found primarily in the Chambal and Rapti rivers in India and Nepal
The global population is estimated at fewer than 900 individuals, making them one of the most endangered crocodilians
Their elongated, narrow snout is adapted for catching fish and is not effective for mammalian prey
Nesting females are highly vulnerable to disturbance — a single disturbance event can cause nest abandonment
Gharial nests are raided by humans for eggs in some areas, directly reducing recruitment into the population
Entanglement in fishing nets causes drowning — gharials must surface to breathe
Sandbar nesting sites have been reduced by river damming, sand mining and agricultural encroachment
Captive breeding and headstarting programmes have released thousands of gharials but survival post-release is uncertain

Welfare Considerations

Individual gharials face acute welfare impacts from fishing net entanglement — drowning after entanglement causes panic and asphyxiation. Animals that survive entanglement may carry injuries including line cuts and flipper damage. Nest disturbance causes maternal abandonment, leaving eggs exposed to temperature extremes and predation. Gharials in rivers with heavy human activity show elevated stress hormones and altered behavioural patterns. Captive-reared individuals released into rivers must rapidly adapt to natural feeding and predator avoidance in a degraded and heavily modified environment, with uncertain survival outcomes that reflect the poor quality of remaining habitat.

What You Can Do

Support gharial conservation organisations working on habitat protection along the Chambal and Rapti rivers
Advocate for river management policies that protect sandbar nesting sites from sand mining and agricultural disturbance
Donate to headstarting programmes that rear gharials to a survivable size before release
Support sustainable fishing practices that reduce net entanglement mortality in gharial rivers
Raise awareness about gharials as one of the most endangered vertebrates and least-known crocodilians
Back enforcement of nest protection regulations during the breeding season at known gharial nesting sites