NitroX,

The fish eating Gavial is endangered in India but some of the captive breeding projects especially the government crocodile farm at Sathanur in Tamilnadu have been so successful that they are crowded and overburdened with crocs. They cannot be released into the wild because they would pose a danger to people and the government doesn't allow farming them for their hides.

The Gavial would be a safe bet for release in the wild because they do not have a record of attacking humans but then people are frightened and the government would have to tread carefully if it decides to release any in the Ganges and other North Indian rivers.

Good hunting!