Acestrorhynchus microlepis

About This Species

Basic Description

The Smallscale Pike Characin is an active, predatory fish from South America. It's considered difficult to care for, making it suitable only for experienced keepers. This species must be kept in groups and is a known jumper, requiring a securely covered aquarium. As a carnivore, it has a specialized diet and will prey on very small tank mates, so companions must be chosen carefully.

Detailed Description

A shoaling predator, the Smallscale Pike Characin is a demanding species for the advanced hobbyist. Its active, territorial nature necessitates keeping it in a group to diffuse aggression amongst themselves. The fish's high metabolism results in significant waste production and high oxygen demands, requiring powerful filtration and consistent water movement. A tight-fitting lid is non-negotiable, as they are notorious jumpers. Its carnivorous diet and sharp predatory instincts mean tank mates must be robust and too large to be considered food. To date, successful captive breeding has not been documented.

Scientific Description

Acestrorhynchus microlepis, a member of the family Acestrorhynchidae, is a South American characin defined by its demanding physiological requirements. Its high metabolic rate results in elevated oxygen consumption and a considerable bioload, necessitating specific environmental controls. This species exhibits rheophilic tendencies, occupying the upper and middle water strata. Behaviorally, it is an active, obligate shoaler that displays intraspecific territoriality. As a carnivore, its diet is specialized, primarily consisting of other living organisms. There are no known records of successful captive propagation for this species, posing a challenge for ex-situ conservation or aquaculture.