Red fish are a favorite for both novice and expert fish enthusiasts alike, making them a popular choice for aquariums, large and small.

MAMIRAUÁ RESERVE, Brazil — On this stretch of the Amazon River, you don't need a fish finder to locate the pirarucu, one of the world's largest freshwater fish. The splashing gives them away. Like the ...

As the cherished rainforest in South America's Amazon River region continues to shrink, the river itself now presents evidence of other dangers: the overexploitation of freshwater fish. As the ...

Smaller fish species are more nutritious, lower in mercury and less susceptible to overfishing, a Cornell-led research team ...

A mass fish die-off in Brazil’s Amazon River region has killed an estimated 20-30 metric tons of fish and other aquatic animals, following one of the worst droughts in Amazonian history. On the night ...

Slither over, Burmese pythons — Florida’s next invasive carnivore could be a 10-foot monster fish that can leap out of the water and eat small mammals. “I can’t imagine it’s good for our ecosystem,” ...

The rich organic matter that gives the largest tributary of the Amazon River, the Rio Negro, its characteristic black hue may provide fish with some protection from the negative effects of copper ...

On the morning of March 26, 2013, approximately 60,000 liters (16,000 gallons) of an oil byproduct used to produce asphalt ...