Wiktionary
n. (taxlink Inia geoffrensis species noshow=1), a species of freshwater dolphin endemic to the Amazon river system
Wikipedia
Boto is a Portuguese name given to several types of dolphins and river dolphins native to the Amazon and the Orinoco River tributaries. A few botos exist exclusively in fresh water, and these are often considered primitive dolphins.
Usage examples of "boto".
Angus agreed, and settled down to await the dark while M boto and Lantu briefed their squad leaders.
In the summers, even the cool summers they had been having lately, the extensive inshore shallows of the sea grew as warm as blood, and dolphins—adapted from Terran river dolphins like the baiji from China, or the boto from the Amazon, or the susu from the Ganges, or the bhulan from the Indus—sported just off the beach.
In the summers, even the cool summers they had been having lately, the extensive inshore shallows of the sea grew as warm as blood, and dolphins - adapted from Terran river dolphins like the baiji from China, or the boto from the Amazon, or the susu from the Ganges, or the bhulan from the Indus - sported just off the beach.