Mountain rivers in North India and Nepal
Rocky and fast-flowing, with deep pools. Flow into River Ganges, then Bay of Bengal (Indian Ocean).
Having caught some goonch before, I knew their tactics on the end of a line. They don’t throw themselves dramatically out of the water and tire themselves out, like a “sporting” fish. They just hunker down and let the current flow over their huge flat head and wing-like pectoral fins, practically gluing themselves to the bottom.