Fig. 1
From: Tradition and Fermentation Science of prohok, an ethnic fermented fish product of Cambodia
Regional map indicating the Mekong River Basin. The Upper Mekong River Basin (light green) begins in China and continues through part of Myanmar. The Lower Mekong River Basin (dark green) continues south through Lao PDR, Thailand, Cambodia, and Vietnam. Inset highlights the vast area of Cambodia that is affected by the seasonal flow of water through the Mekong–Tonle Sap hydrological system. Blue indicates permanent waterways. The red line indicates the boundaries of the vast flood zone