Explanation:

The team of Zoological Survey of India, Patna has for the first time started conservation of Gangetic dolphin,tortoises and birds in Kosi river, the survey team will mainly observe activities related to the life of Gangetic dolphins.

The Koshi river originates from the Gosaithan situated northeast of Kathmandu, the capital of Nepal, enters Supaul district in Bihar and runs through the Ganges river near Khagaria, the Koshi river is called Sapta Kaushiki in Nepal, because this river is seven streams The Koshi river is called the mourning of Bihar because it is the most affected by the flood, it is the longest in the northern tributaries of the Ganges, the total length of the Koshi river is 730 km and its length in Bihar Is 260 kilometers.