The recent survey shows population of the endangered Gangetic river dolphin has grown to 223 from about 175 last year at the Vikramshila Gangetic Dolphin Sanctuary, India's only dolphin sanctuary, located in Bihar

Vikramshila Biodiversity Research and Education Centre (VBREC) of Tilka Manjhi Bhagalpur University (TMBU). Has revealed in recent survey the population of endangered Gangetic River Dolphin has grown to 223, This was revealed in a census conducted recently by the 

Coordinator of VBRE Sunil Choudhary said "It is a positive sign that the Gangetic dolphin's population is increasing,"  The Gangetic river dolphin is India's national aquatic animal, but frequently falls prey to poachers. poachers kill them for their flesh and oil, which is used as an ointment and aphrodisiac.

Wildlife officials say There are only about 2,000 Gangetic river dolphins left in India, down from tens of thousands just a few decades ago.Sunil Choudhary said the experts conducted the census during Oct 22-24 at the Vikramshila Dolphin Sanctuary, which is spread over 50 km along the Ganges river in Bhagalpur district, about 200 km from here.

"Gangetic river dolphins have registered an increase of 27 percent in the past year. About 223 dolphins were counted by the experts during the latest census, compared to 175 dolphins spotted last year during the survey,"  Choudhary added that in February 2012, VBREC would conduct another survey on the riverbed to tally the census. He said the increase in the number of dolphins indicated a balanced eco-system and that the breeding of the species has gone up.
but still the biuggest issue is the ashes drawn in river ganga by the NTPC as this cause pollution and  suffocationa to the aquatics