The document discusses facts about the Gangetic river dolphin. It states that Guwahati, Assam was the first city to declare the Gangetic river dolphin as its city animal. It is locally known as 'Sihu' in Guwahati. The Gangetic river dolphin has been officially declared as the National Aquatic Animal of India. IUCN has listed the Gangetic river dolphin as critically endangered. International trade of the species is prohibited under CITES and it is also protected under CMS.