侧带鲍氏脂鲤 · Striped Pike 'Characin'

Overview

A predator associated with South American black waters, Boulengerella lateristriga is unsuitable for a community of small fish. A narrow dark line from behind the eye toward the tail, together with dark crossbars on the tail lobes, helps distinguish it from similar species.

Distribution & habitat

Records place it in the Negro basin of Brazil and Colombia and parts of the upper Venezuelan Orinoco. It appears restricted to black-water channels and tributaries, with dark organic staining, little dissolved mineral content, and strongly acidic conditions.

Aquarium setup

Provide at least a 240 by 90 cm footprint, with floating or overhanging cover. Maintain high oxygen and moderate water movement. Mature filtration, stable chemistry, and weekly changes of 30–50% are central to care.

Use a tight lid and consider screening the back and sides to reduce startled collisions. Surface cover should coexist with adequate swimming room.

Diet & feeding

In nature it takes mainly small fish and insects, but usually adapts to dead foods. Scale offerings from bloodworms, small earthworms, and chopped shrimp up to suitable fish strips, whole shrimp, mussels, and larger worms. Feed insects such as crickets beforehand with appropriate fish food or vegetables.

Avoid mammalian or avian meat and routine feeder fish because of unsuitable fats and disease or parasite risks.

Behaviour & compatibility

It is generally peaceful toward fish too large to swallow. Select similarly sized, placid companions rather than territorial or highly competitive fish. Conspecific aggression is not typical; juveniles school more readily than adults, although older fish still gather. At least four are suggested.

Notes

Compared with Boulengerella maculata, this species has a longer narrow lateral line, distinct tail crossbars, and no scattered dark spotting over the upper body. Both can show a broader midlateral band, so that feature alone is insufficient.