Lipstick Tetra Care Guide - Tank Setup, Diet & Breeding

The Lipstick Tetra is a small, elegant characin named for the vivid reddish marking that highlights the mouth and snout. Its silvery body is complemented by warm red and orange tones around the head, while the fins and rear portion of the body can show subtle golden, yellow or reddish reflections depending on the lighting and the fish's mood.

This species has a streamlined shape and an active but generally peaceful character. In a group, Lipstick Tetras move confidently through the middle levels of the aquarium, often forming a loose shoal that tightens when they are startled or displaying to one another. Their coordinated movement gives a planted aquarium lively motion without the boisterousness of larger tetras.

In the wild, they inhabit flowing tropical waters and smaller tributaries in the Araguaia region. These habitats may contain submerged roots, leaf litter and aquatic vegetation, creating a mixture of open swimming areas and shaded cover. The species' compact form and reflective coloration are well suited to life in clear, structured streams.

Moenkhausia cosmops is a relatively recent addition to the aquarium hobby compared with familiar species such as the neon tetra. Its restrained adult size, attractive facial colouration and peaceful social behaviour have made it increasingly appealing to aquarists seeking a distinctive South American schooling fish.

Moenkhausia cosmops is native to Brazil in South America, where it occurs in the Rio Araguaia basin and associated clear-water streams and tributaries. It comes from tropical freshwater environments with seasonal changes in flow and water conditions.

A group should have at least a 60-litre aquarium, with a footprint of approximately 60 x 30 cm or larger; a longer tank is especially useful because these active swimmers appreciate horizontal space. Use gentle filtration and provide open midwater for shoaling alongside dense plants, driftwood, roots and shaded areas that create security. A dark, fine-grained substrate helps their colours stand out, while leaf litter and subdued lighting can evoke the structure of their natural streams. Leave the aquarium securely covered, as small tetras may jump when startled.

Up to about 4 cm (1.6 in) in total length. Females are usually slightly larger and deeper-bodied than males, while males tend to remain slimmer.

Lipstick Tetras are omnivores that naturally take small aquatic invertebrates, insect larvae, crustaceans and other tiny food items, along with some plant matter and detritus. Offer a varied diet of high-quality fine flakes or micro-pellets supplemented with small frozen or live foods such as baby brine shrimp, daphnia, cyclops and mosquito larvae. Small portions are preferable because their mouths are tiny and uneaten food can quickly affect water quality.

Lipstick Tetras are peaceful community fish and can be kept with other similarly sized, non-aggressive species. Suitable companions include small Corydoras, peaceful rasboras, pencilfish, smaller danios, other calm tetras and gentle dwarf cichlids such as Apistogramma, provided the aquarium is appropriately arranged. Avoid large predatory fish, fin-nippers and boisterous species that may intimidate or outcompete them, as well as fish large enough to swallow them.

Lipstick Tetras are egg-scattering characins that can be bred in a separate, mature breeding aquarium with soft, slightly acidic water and subdued lighting. Condition a group with plenty of small live or frozen foods, then provide fine-leaved plants or spawning mops for the eggs. Spawning usually takes place among the vegetation, after which the adults should be removed because they may eat the eggs. The eggs hatch in roughly 24 to 36 hours, and the fry can be raised on infusoria or other suitably tiny first foods before progressing to newly hatched brine shrimp.

Females are generally fuller through the belly, particularly when carrying eggs, and may be marginally larger overall. Mature males are typically more slender and can display stronger colour or more intense patterning during courtship, although the differences are subtle.