But that hypothesis has a key flaw: Most of the pet trade in fish in Nepal is concentrated in big cities such as Kathmandu and Pokhara, and not so much in the area where the janitor fish were ...

KAPILVASTU, Nepal — At his fish pond near his home in Krishnanagar Municipality in western Nepal’s Kapilvastu, Imtehaj Khan closely watches a large TV screen mounted on a wall. For outsiders ...