In the "Mekong River" zone - these zones don't make much sense any more as the geographic theming has largely been dropped in favour of two broad categories of Africa and Asia-Pacific.
This exhibit currently houses 6 species:
Vietnamese Pond Turtle (Mauremys annamensis)
Philippine Sailfin Lizard (Hydrosaurus pustulatus)
Chinese Water Dragon (Physignathus cocincinus)
Fire Eel (Mastacembelus erythrotaenia)
Red-cheeked Barb (Puntius orphoides)
Spanner Barb (Barbodes lateristriga)