The Centre is carrying out the first ever across-the-river survey in Ganga to determine the population of aquatic life, including that of the endangered Gangetic doplhin. As per the the National Mission for Clean Ganga (NMCG), the survey will create a baseline scientific data to take suitable measures to improve quality of the river water.The first leg of the census was launched on 1st of this month from Narora in Uttar Pradesh to Bijnor to ascertain the number of the national aquatic animal.'<br/><br/>A study to figure out fish species composition in the river has also been started from Harshil in Uttarakhand.The authority is conducting the survey through Wildlife Institute of India, an autonomous institution of Environment and Forest Ministry, under Namami Gange programme.Apart from number of dolphins, number of ghariyals and turtles in the river will also be ascertained.Besides populace count, the study will help know distribution pattern of aquatic life in the river, extent of threat level they are facing and their habitat conditions.