Input (grade 13): Ganges and Brahmaputra Rivers and their tributaries in India, Bangladesh and Nepal, while the Indus River Dolphin is found in the Indus river in Pakistan and the Beas and Sutlej rivers in India.
Output (grade 9): They are very similar to the Ganges River Dolphin which is mainly found in the Ganges and Brahmaputra Rivers in India, Bangladesh and Nepal.