Ganges Indian narrow-headed softshell turtle ("Chitra indica"), Indian softshell turtle ("Nilssonia gangetica"), Indian peacock softshell turtle ("N. hurum") and Cantor's giant softshell turtle ("Pelochelys cantorii"; only in the lowermost section of Ganges basin). Most of these are seriously threatened. The river's most famed fauna is the freshwater Ganges river dolphin ("Platanista gangetica gangetica"), which has been declared India's national aquatic animal. This dolphin used to exist in large schools near to urban centres in both the Ganges and Brahmaputra rivers, but is now seriously threatened by pollution and dam construction. Their numbers have now dwindled to a quarter of their numbers
Endangered Species Act of 1973 landowner will not be required to do more than already agreed upon in the CCA. The Experimental Population Provision encourages introductions of species into formerly occupied or new habitat without the full range of legal restrictions for endangered species. The provision was added to the act in 1982 to encourage landowner support for species survival and recovery. Experimental populations could be used for the assisted migration of endangered species. To delist species, several factors are considered: the threats are eliminated or controlled, population size and growth, and the stability of habitat quality and quantity. Also, over a dozen species have