A new fish species has emerged, but it does not hail from the realm of Mordor as its name suggests. The relationship between pacus and piranhas has been closely studied by researchers and while the ...

The Amazon basin houses over three million species in its rainforest ecosystem, with over 2,500 tree species creating and sustaining this vibrant environment. One in ten known species in the world ...

Add Yahoo as a preferred source to see more of our stories on Google. Thousands of fish species — about 2,500 of them named — call the Amazon River home, but scientists estimate nearly half of the ...

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Smaller fish species are more nutritious, lower in mercury and less susceptible to overfishing, a Cornell-led research team has found. The team's study was conducted in the Amazon River, but the ...

The gilded and piramutaba catfish (Brachyplatystoma rousseauxii and B. vaillantii, respectively) were recently placed on the Convention on the Conservation of Migratory Species (CMS) list, also known ...

The new tetra fish species measure about half an inch long, according to researchers. Photo by Lopez, G. G. S., Souza, C. S., Reia, L., Mantuaneli, L. A., Morales, B ...

Deep in the vast rivers and flooded forests of the Amazon Basin, there lives a fish that appears to be prehistoric in both size and appearance. The arapaima, also called the “pirarucu,” is one of the ...

Rivers are among the most important natural features on Earth. They provide freshwater, support ecosystems, help agriculture, ...