Description
The original description contained no type locality but this species is currently considered endemic to the Mazaruni River system in Guyana, including many of its tributaries such as the Kurupung (where the species was first discovered in 1953), Eping, and Tabuba.
The upper and lower limits of its distribution within the Mazaruni basin appear to be the Peaima and Tiboku waterfalls, respectively.
There also exist reported occurrences from the Casiquiare Canal and Río Ventauri, Venezuela (Río Orinoco drainage) but these apparently require confirmation.
Very peaceful but does not make an ideal community fish due to its small size and rather timid nature.
Ideally it should be maintained alone or at most with diminutive, non-aggressive characids and smaller callichthyid or loricariid catfishes.
It also makes an ideal dither fish for Apistogramma spp. and other dwarf cichlids since it tends to inhabit the middle-to-upper regions of the tank, and does not actively predate fry.
Though gregarious by nature it’s a shoaling rather than schooling species with rival males sparring on a regular basis during daylight hours.
It’s not uncommon to see nipped fins within a group though this behaviour does not normally extend to tankmates.
Buy as many as possible, ideally 10 or more, as when kept in larger groups any aggression is spread between individuals plus the fish are bolder and exhibit more natural behaviour.