What herbivores live in the Amazon River?

The Amazon River is home to several herbivores, including the manatee, which primarily feeds on aquatic plants. Another notable herbivore is the capybara, the largest rodent in the world, that often inhabits riverbanks and feeds on grasses. Additionally, various species of fish, such as the piranha, are known to consume plant matter, contributing to the herbivorous diet in the ecosystem.