Amazon river dolphin (Inia geoffrensis): Difference between revisions

In Brazil, Amazon river dolphin have been extensively recorded. They are found in the central region, particularly in the Araguaia-Tocantins River basin, and various tributaries such as the das Mortes and Verde, Paranã, Vermelho, Peixe, Crixas-Açú, and Água Limpa rivers. Additionally, sightings have been reported in Lake Montaria in the state of Mato Grosso and mangrove habitats in Marajó Bay.<ref name=":1" />

In Colombia, Amazon river dolphin are found in both the Orinoco and Amazon systems. They inhabit the Caquetá-Japurá River, from the Araracuara rapids to the mouth of the Apaporis River at the border with Brazil, the Putumayo-Içá River from Puerto Leguizamo to the east, and in the Amazon River. In the Orinoco, sightings have been reported in various rivers including Meta, Arauca, Casanare, Bita, Vichada, Tomo, Tuparro, Orinoco, Guaviare (and the Guayabero affluent), Inírida, and Atabapo.<ref name=":1" />

Amazon river dolphin are widely distributed in Ecuador, particularly in the main rivers and some lacustrine systems at elevations below 260 meters. They have been sighted in rivers such as Payamino (near Napo River), Napo, Pastaza, Tigre, and Santiago. Notably, they are absent from the Morona River in the Ecuadorian Amazon.<ref name=":1" />

In Venezuela, Amazon river dolphin occur in the Orinoco system, including the delta region upstream at Ciudad Bolivar, Caicara del Orinoco, and near Puerto Ayacucho. They are also found in rivers such as Apure, Portuguesa, Guanare, Guaritico, Capanaparo, Cinaruco, and Caura. Amazon river dolphin sightings have been documented in the Cassiquiare Canal, connecting the Orinoco with the Negro River, and above and below the two sets of rapids at Puerto Ayacucho.<ref name=":1" />