The 10-foot-long arapaima was quickly disappearing in Brazil until local communities stepped in to save it—and themselves. A close-up view of an arapaima from the Brazilian Amazon shows its unique ...

Two new species of small fish were discovered in creeks outside the Birmingham metropolitan area in Alabama, according to a new study. Photo from Fouad Abou-Rizk “Brilliantly” colored fish caught in ...

Learn how invasive species are threatening New York’s waterways. Experts explain how they spread, why they’re dangerous to ecosystems, and what you can do to help stop them. Reflections on the Erie ...

The distribution and relative abundance of minnows and minnow-like fishes of small Ozark watersheds show patterns that could be attributed to interspecific interactions such as competition. Species ...