Gharials are critically endangered fish-eating crocodilians native to the Indian subcontinent. Their extreme specialisation for riverine life makes them highly vulnerable to habitat degradation, and their welfare depends on maintaining the deep, clear river systems they evolved to inhabit.
Gharials are exceptionally sensitive to water quality, flow regime, and sand bank availability. Animals in degraded river systems face nutritional stress from fish depletion, entanglement in fishing nets, and loss of nesting habitat from sand mining and flood control infrastructure. Hatchlings released from captive breeding programs face high mortality in rivers that have not been restored to support healthy populations. The welfare of wild gharials requires river management that maintains deep pools for thermoregulation and hunting, uninterrupted sand banks for nesting, and fish populations adequate for nutrition. Conservation that focuses on release numbers without addressing habitat quality produces low welfare returns per animal involved.