Table 2.
Richness of freshwater vertebrate and decapod species by country, ranked by proportion of endemic species. Area-adjusted rank shows how the rank order of countries changes when the size of each country is taken into account
| Country | Area (km2) | Number of species | Number of endemic species | Proportion endemic | Area-adjusted rank |
|---|---|---|---|---|---|
| Tanzania | 945,087 | 189 | 181 | 0.96 | 8 |
| China | 9,706,961 | 388 | 325 | 0.84 | 18 |
| Argentina | 2,780,400 | 681 | 496 | 0.73 | 9 |
| Guyana | 214,969 | 361 | 214 | 0.59 | 1 |
| Bolivia | 1,098,581 | 643 | 351 | 0.55 | 5 |
| Angola | 1,246,700 | 861 | 436 | 0.51 | 4 |
| DR Congo | 2,344,858 | 368 | 162 | 0.44 | 13 |
| Australia | 7,692,024 | 673 | 269 | 0.40 | 17 |
| Brazil | 8,514,877 | 420 | 151 | 0.36 | 24 |
| Colombia | 1,141,748 | 372 | 117 | 0.31 | 11 |
| India | 3,166,414 | 331 | 88 | 0.27 | 20 |
| Lao PDR | 236,800 | 325 | 88 | 0.27 | 2 |
| Cameroon | 475,442 | 394 | 103 | 0.26 | 7 |
| Ecuador | 256,369 | 368 | 90 | 0.24 | 3 |
| Malaysia | 330,803 | 256 | 53 | 0.21 | 10 |
| Peru | 1,285,216 | 233 | 50 | 0.21 | 16 |
| Indonesia | 1,904,569 | 329 | 62 | 0.19 | 19 |
| Myanmar | 676,578 | 241 | 42 | 0.17 | 14 |
| Mexico | 1,964,375 | 249 | 40 | 0.16 | 23 |
| Vietnam | 331,212 | 165 | 25 | 0.15 | 12 |
| Venezuela | 912,050 | 167 | 19 | 0.11 | 22 |
| Panama | 75,417 | 237 | 23 | 0.10 | 6 |
| Madagascar | 587,041 | 279 | 24 | 0.09 | 15 |
| Thailand | 513,120 | 189 | 13 | 0.07 | 21 |
| USA | 9,629,091 | 174 | 10 | 0.06 | 25 |