Ecoregions
| ID | Realm | Major Habitat Type | Ecoregion |
|---|---|---|---|
| 718 | Indo-Malay | Tropical and subtropical coastal rivers | Sri Lanka Wet Zone |
| 719 | Indo-Malay | Tropical and subtropical coastal rivers | Chin Hills - Arakan Coast |
| 720 | Indo-Malay | Tropical and subtropical floodplain rivers and wetland complexes | Sitang - Irawaddy |
| 721 | Palearctic | Tropical and subtropical upland rivers | Upper Salween |
| 722 | Indo-Malay | Tropical and subtropical floodplain rivers and wetland complexes | Lower & Middle Salween |
| 723 | Indo-Malay | Montane freshwaters | Inle Lake |
| 724 | Palearctic | Tropical and subtropical upland rivers | Upper Lancang (Mekong) |
| 725 | Palearctic | Montane freshwaters | Er Hai |
| 726 | Indo-Malay | Tropical and subtropical floodplain rivers and wetland complexes | Lower Lancang (Mekong) |
| 727 | Indo-Malay | Tropical and subtropical upland rivers | Khorat Plateau (Mekong) |
| 728 | Indo-Malay | Tropical and subtropical floodplain rivers and wetland complexes | Kratie - Stung Treng (Mekong) |
| 729 | Indo-Malay | large river deltas | Mekong Delta |
| 730 | Indo-Malay | Tropical and subtropical coastal rivers | Southern Annam |
| 731 | Indo-Malay | Tropical and subtropical coastal rivers | Eastern Gulf of Thailand Drainages |
| 732 | Indo-Malay | Tropical and subtropical floodplain rivers and wetland complexes | Chao Phraya |