Acestrorhynchus pantaneiro, known commonly as the pike characin, is a species of freshwater ray-finned fish belonging to the family Acestrorhynchidae, the freshwater barracudas. It was described by Naércio Aquino de Menezes in 1992. It inhabits the La Plata, Paraná, Paraguay, Uruguay, and Mamoré Rivers. It reaches a maximum total length of 35.2 cm (13.9 in), and a maximum weight of 396 g (14.0 oz).

A. pantaneiro feeds on bony fish. It is harvested by commercial fisheries.

...