Eigenmannia guairaca
Eigenmannia guairaca is a small electric knifefish native to tropical freshwater rivers. Reaching up to 17.3 cm (6.8 in), it is not a typical sport fish but can be caught by anglers interested in exotic or night‑fishing targets.
Family
Sternopygidae
Max Size
17.3 cm
Habitat
freshwater
Climate
tropical
Best Season
Warm summer months (June‑August in the Northern Hemisphere, December‑February in the Southern Hemisphere)
Best Time
Nighttime, especially dusk to dawn, when the fish are most active
No distribution map available
Puerto Ayacucho, Orinoco River
VenezuelaPrime stretch of the Orinoco where Eigenmannia guairaca thrives in deep channels with abundant insect larvae.
Best: December-February
Manaus, Rio Negro
BrazilBlackwater of the Rio Negro near Manaus offers clear night visibility, ideal for targeting glass knifefish.
Best: June-August
Guaviare River, Meta
ColombiaMid‑river pools of the Guaviare host large aggregations of Eigenmannia during the rising water season.
Best: September-November
Lake Maracaibo Delta
VenezuelaShallow deltaic channels provide easy access and abundant prey, making this a beginner‑friendly hotspot.
Best: March-May
Cuyuni River
GuyanaRemote upper reaches of the Cuyuni hold trophy‑size knifefish, but require logistics and experienced guides.
Best: April-June
Rio Branco, Brazil/Suriname Border
BrazilBorder waters of the Rio Branco offer strong currents and night‑time feeding runs of Eigenmannia.
Best: August-October
Best bait: Live or frozen bloodworms, tiny shrimp, or mosquito larvae