Red Back Moon Tetra Care Guide - Aquarium Setup, Diet & Breeding

The Red Back Moon Tetra is a small, elegant African characin named for the warm reddish colour that develops along the back and upper body. Its silvery body is complemented by translucent fins and a dark, reflective eye, giving the fish a subtle but attractive appearance that becomes more vivid when it is relaxed and displaying.

This is an active yet generally peaceful schooling species. Red Back Moon Tetras spend much of their time in the middle levels of the aquarium, moving together in a loose group and becoming especially animated when males display to one another or court females.

In the wild, the species is associated with shaded tropical waters in the Congo basin. Forest cover, overhanging vegetation and tannin-stained water help create a subdued environment in which its reflective scales and reddish back stand out.

Although less commonly seen than many South American tetras, Bathyaethiops flammeus is a rewarding choice for aquarists interested in African community fish. Its understated colouration, lively social behaviour and manageable adult size make it well suited to a carefully planned tropical aquarium.

Red Back Moon Tetras are native to the central African Congo River basin, particularly the Democratic Republic of the Congo. They inhabit calm or gently flowing forest waters where submerged vegetation, leaf litter and shaded conditions provide cover.

A group of Red Back Moon Tetras should be provided with at least an 80-litre aquarium, ideally measuring around 90 cm long by 30 cm wide or more so they have room to school. Use a dark, fine-grained substrate with driftwood, smooth branches, rooted plants and floating vegetation to create shaded areas, while leaving open swimming space through the centre. Gentle filtration, subdued lighting and some leaf litter or other natural cover help reproduce the character of their forest-stream habitat.

Up to about 5 cm (2 inches) in total length; females are usually slightly deeper-bodied and may be marginally larger than males.

Red Back Moon Tetras are omnivores that benefit from a varied diet of quality small pellets or flakes supplemented with frozen or live foods such as baby brine shrimp, daphnia, cyclops and mosquito larvae. Small feedings offered once or twice daily are preferable to large portions, and occasional vegetable-based ingredients can add useful variety. Their food should be small enough for their relatively modest mouths.

Red Back Moon Tetras are peaceful and can be kept with similarly sized, calm African tetras, peaceful rasboras, small barbs, dwarf corydoras, small Synodontis species and other non-aggressive community fish. Suitable tankmates should be too large to swallow but not so boisterous that they outcompete or intimidate them. Avoid large predatory fish, fin-nipping species and aggressive cichlids, which may harass or prey on these delicate schooling tetras.

Red Back Moon Tetras are egg-scattering fish that can be spawned in a separate, dimly lit breeding aquarium with soft, slightly acidic water and fine-leaved plants or a spawning mop. Condition a group with plenty of live or frozen foods, then introduce a well-matched pair or several males and females. The adults should be removed after spawning because they may eat the eggs. Hatching generally occurs within a few days, and the tiny fry can be raised on infusoria or other suitably small first foods before progressing to baby brine shrimp.

Females are generally fuller through the abdomen, particularly when carrying eggs, while males tend to be slimmer and may show stronger colour and more active displaying. Differences can be subtle outside breeding condition.