Biodiversity report reveals immense freshwater fish richness in the Amazon Basin, highlighting critical roles in ecosystem function and community sustenance.
Across the vast sweep of the Amazon Basin, thousands of rivers, streams and floodplain lakes flow in an immense, interconnected waterscape— home to an unparalleled diversity of freshwater fishes. More than 2,700 species have so far been recorded, with dozens more added each year as scientific exploration continues. This report dives beneath the surface to reveal their life histories, including their range and variety, the roles they play in the ecosystem, their adaptations and their niches. It also explores their place in human society, since millions of people across the Amazon rely on fish for food and livelihoods, and they have a unique place in the sociocultural heritage, histories and identities of Indigenous Peoples and local communities throughout the basin.
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Silva et al. (2026) studied this question.
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