KAILALI: The population of the endangered dolphin has been decreasing in Kailali based rivers these days. The dolphin used to be found in Patharaiya, Mohana, Kandra and Kanda Rivers with the rise in water level during the rainy season and locals and tourists in large numbers used to throng these rivers to observe the dolphins; but now the number of dolphins has been gradually dwindling, said a local Dhan Bahadur Saud. The dolphins are almost on the verge of extinction in local rivers due to fishing using poisoning, pollution and negligence in protecting the endangered species, locals said. (Source: The Himalayan Times)