The Gavialis gangeticus, commonly known as the gharial, is a distinctive crocodilian with a long, narrow snout adapted for catching fish. It inhabits the riverine ecosystems of the Indian subcontinent. Gharials are critically endangered, playing a crucial role in maintaining healthy fish populations and aquatic ecosystems.

The Gavialis gangeticus, commonly known as the gharial, is native to the northern part of the Indian subcontinent. Its geographical distribution includes the river systems of India and Nepal, particularly the Ganges, Brahmaputra, Mahanadi, and other rivers in the Gangetic basin.

Gharials inhabit freshwater river systems with deep, fast-moving waters. They prefer areas with sandy banks and shallow water habitats which are ideal for nesting and basking. The climate in these regions is typically tropical and subtropical, with a distinct monsoon season.

Gharials are highly adapted aquatic reptiles, primarily occupying the ecological niche of a fish-eating crocodilian. Their elongated, narrow snouts are specialized for catching fish, which constitute the majority of their diet. They play a critical role in maintaining the aquatic ecosystem's health by controlling fish populations.