A monster arapaima catch lit up TikTok, but not all anglers are convinced the viral feat counts as real sportfishing.

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 ...

National Geographic Explorer João Campos-Silva has long been fascinated by the arapaima, since before it sprung back from near extinction just over a decade ago. The precarious state of the world’s ...

A new species of the giant fish arapaima has been discovered from the central Amazon in Brazil, raising questions about what other species remain to be discovered and highlighting the potential for ...

This is the shocking moment a giant arapaima fish leapt from a tank and startled a feeder. The woman held a small fish above the aquarium, where two huge fish with armor-like scales waited for her to ...

The lack of tools for sex identification and assessment of gonadal development are hindering our ability to study the reproductive dysfunction of Arapaima gigas in captivity. This study initially ...