The Rio Siapa is a tributary of the Casiquare Canal, the major waterway connecting the Orinoco and Amazon river basins. With its low gradient, the Casiquiare should act as a relatively easy channel for which fish could use to traverse between the basins, but due to its specific water chemistry, only a relatively small number of fish species can move freely between these basins.
- Geographical region
- South America
- Drainage Basin
- Amazon basin
- River catchment
- Amazon
- Water body type
- Igarapè
- Water body name
- Siapa river
- Water body part
- Channel
- Water body course
- Lower course
- Water body: tributary of
- Igarapè
- Tributary name
- Siapa River
