The construction of the Balbina hydroelectric dam in the Brazilian Amazon led to the loss of seven endemic fish species in the Uatumã River, researchers have found. The hydroelectric dam has ...

In a small stream in the Amazon, a new species of fish was discovered. José Igor da Silva, Yasmim de Santana and Manoela Maria Ferreira Marinho (2025) Neotropical Ichthyology Across 2.3 million square ...

Hidden in the sticks and leaves of murky water, a small fish with a “dark mark” was discovered as a new species. Salvador Rios via Unsplash Deep in the Amazon basin, the rio Juma splits into tendrils ...

In a fascinating turn of events, researchers have documented endangered lemon sharks preying on invasive freshwater fish. Lemon sharks have been filmed hunting jaguar cichlids for the very first time, ...

The presence of the Balbina hydroelectric dam in the Brazilian Amazon led to the local extinction of several endemic fish ...