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| English | German |
| Eurasian river warbler | Schlagschwirl (Locustella fluviatilis) |
| Guyanian river dolphin | Guyana-Delphin (Sotalia guianensis) |
| red river hog | Flußschwein (Potamochoerus porcus) |
| red river hog | Pinselohrschwein (Potamochoerus porcus) |
| red river hog | Buschschwein (Potamochoerus porcus) |
| river dolphins | Flußdelphinartige (Platanistoidea) |
| river lamprey | Flußneunauge (Petromyzon fluviatilis) |
| river otter | kanadischer Fischotter (Lutra canadensis) |
| river otter | nordamerikanischer Fischotter (Lutra canadensis) |
| river otters | Fischotter (Lutra) |
| river trout | Steinforelle (Salmo trutta f. fario) |
| river trout | Bachforelle (Salmo trutta f. fario) |
| Southern river otter | mittelamerikanischer Otter (Lutra annectens) |