Dusky Narrow Hatchetfish (Triportheus angulatus)

Dusky Narrow Hatchetfish (Triportheus angulatus) The Dusky Narrow Hatchetfish is a sleek and elegant South American surface-dwelling fish known for its shimmering silver body and streamlined profile. Native to the Amazon Basin, this active schooling species spends most of its time near the water’s surface, where it feeds on insects and other small prey. Its reflective scales and graceful swimming behavior make it a unique addition to large community aquariums and biotope displays. Growing to approximately 6–8 inches, the Dusky Narrow Hatchetfish requires plenty of open swimming space and does best when kept in groups. While not commonly seen in the aquarium trade, healthy specimens are highly sought after by hobbyists looking for unusual Amazonian species. Their active nature, striking appearance, and rarity make them a standout choice for experienced fishkeepers seeking something different.