How many species of river dolphin are there?

There are five species of river dolphin:

1. Amazon River Dolphin (Inia geoffrensis)

2. Bolivian River Dolphin (Inia boliviensis)

3. Asian River Dolphin (Platanista gangetica) - This species has two subspecies:

* *Platanista gangetica gangetica* (Ganges River dolphin)

* *Platanista gangetica minor* (Indus River dolphin)

4. La Plata River Dolphin (Pontoporia blainvillei)

5. Tucuxi (Sotalia fluviatilis)

These dolphins are all unique and adapted to their respective riverine environments.