Acestrorhynchus falcirostris
Acestrorhynchus falcirostris, commonly known as the slender pike‑characin, is a fast‑swimming predatory catfish found in South American rivers. It is prized by anglers for its aggressive strikes and sharp teeth, making it a thrilling freshwater game fish.
Family
Acestrorhynchidae
Max Size
45 cm
Habitat
freshwater
Climate
tropical
Best Season
Late spring to early autumn (October to March in the Southern Hemisphere)
Best Time
Early morning and late evening
No distribution map available
Rio Negro (Manaus Basin)
BrazilPrime stretch of the Rio Negro just downstream of Manaus where Acestrorhynchus falcirostris congregates near deep channels and submerged roots during the dry season.
Best: June–September
Madre de Dios River (Puerto Maldonado)
PeruClear, fast‑flowing sections of the Madre de Dios near Puerto Maldonado host abundant prey fish, attracting A. falcirostris in the high‑water months.
Best: November–February
Upper Orinoco (Caicara del Orinoco)
VenezuelaRemote tributaries of the Upper Orinoco provide deep pools and overhanging vegetation that are ideal ambush sites for this predatory fish.
Best: March–May
Pantanal Floodplain (Corumbá)
BrazilDuring the flood pulse, the expansive Pantanal waterways become a hotspot for A. falcirostris, especially around submerged logs and oxbow lakes.
Best: December–March
Putumayo River Tributary (Near Leticia)
ColombiaA remote, lesser‑known tributary of the Putumayo offers crystal‑clear water and abundant insect hatches, drawing this species to its edges.
Best: August–October
Lake Tefé (Amazonas)
BrazilThe shallow, vegetated margins of Lake Tefé provide perfect hunting grounds for A. falcirostris during the cooler months.
Best: May–August
Best bait: Live minnows or small fish such as guppies