Tucuxi
Sotalia fluviatilis
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassMammalia (Mamífers)
- OrderCetacea
- FamilyDelphinidae (Delfínids)
- GenusSotalia (Estuarine Dolphins)
- SpeciesSotalia fluviatilis (Tucuxi)
The tucuxi (Sotalia fluviatilis), alternatively known in Peru bufeo gris or bufeo negro, is a species of freshwater dolphin found in the rivers of the Amazon basin. The word tucuxi is derived from the Tupi language word tuchuchi-ana, and has now been adopted as the species' common name. Despite being found in geographic locations similar to those of 'true' river dolphins such as the boto, the tucuxi is not closely related to them genetically. Instead, it is classed in the oceanic dolphin family, Delphinidae. Physically, the species resembles the bottlenose dolphins, but differs sufficiently to be placed in a separate genus, Sotalia. The Guiana dolphin (Sotalia guianensis), a related dolphin present in coastal and estuarine environments and formerly grouped together with the tucuxi, have recently been recognized as a distinct species. Wikipedia →
10–20% of wildlife watchers report a Tucuxi sighting in Anavilhanas National Park, based on 8 days of visitor records from GBIF citizen-science data.
Closest Relatives at Anavilhanas National Park
📅 Monthly Probability
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 2 | Anavilhanas National Park | 🇧🇷 Brazil |
Quick answers
What are the chances of seeing a Tucuxi in Anavilhanas National Park?
About 17% of wildlife watchers report a Tucuxi sighting in Anavilhanas National Park, based on 8 days of visitor records from GBIF citizen-science data.
When is the best time to see Tucuxi in Anavilhanas National Park?
May has the highest sighting rate for Tucuxi in Anavilhanas National Park in our monthly data.