ANSWER: Both
Explanation:
- According to a World Wide Fund for Nature (WWF) factsheet, the Ganges River dolphin, or susu, inhabits the Ganges-Brahmaputra-Meghna and Karnaphuli-Sangu river systems of Nepal, India, and Bangladesh.
- Once found in thousands, there are fewer than 2,000 Gangetic dolphins left in the country in the entire distribution range along the Ganga and Brahamaputra river system.
- It was declared as the National Aquatic Animal in 2010.