Flagtail Corydoras

Adult specimens of this fish can grow up to 7 cm in length. Their bodies are adorned with horizontal stripes, which are particularly clear on the tail. The head is dotted with dark speckles. The coloration consists of a predominant combination of white and dark shades, with the belly typically remaining light. Differences between males and females are not pronounced, making them practically indistinguishable from each other.

The Flagtail Corydoras is endemic to South America. In nature, the species inhabits the Rio Negro basin in Brazil. The fish prefer areas with slow currents, shallow waters with soft substrate, and an abundance of fallen leaves, snags, and aquatic vegetation, where they find shelter and food.

This is a peaceful and social species that is recommended to be kept in groups of 6 or more individuals. In a group, the fish feel confident, display natural activity, and are less prone to stress. They get along well with other peaceful aquarium inhabitants, such as small characins, rasboras, or dwarf cichlids. They should not be kept with aggressive or overly large fish.

An aquarium of at least 70 liters is required for keeping a group. It is critically important to use a soft sandy substrate or fine smooth gravel without sharp edges to avoid damaging the fish's sensitive barbels. The decor should include snags, stones, and live plants that create shaded areas. Effective filtration with moderate current and regular water changes are necessary. Water parameters: temperature 21–26 °C, pH 6.5–7.5, hardness 2–12 dGH.

An omnivorous species, feeding on small invertebrates and organic detritus in nature. In the aquarium, they accept high-quality sinking dry foods in the form of tablets or granules. The diet should be supplemented with live or frozen foods, such as bloodworms, Artemia, or tubifex. Food should sink to the bottom, as the fish feed exclusively in the bottom layer.

Breeding requires a separate spawning aquarium with a soft substrate and clumps of fine-leaved plants. Frequent water changes with cooler water, simulating the rainy season, often serve as a stimulus for spawning. Eggs are laid on glass or plants. After spawning is complete, it is recommended to remove the parents to prevent them from eating the eggs. Fry are fed with Artemia nauplii or microworms.

The species is sensitive to water quality and substrate cleanliness. If kept on dirty or sharp substrate, erosion and infections of the barbels are possible. Like other members of the family, the fish tolerate elevated nitrate concentrations poorly and are sensitive to certain medications, especially those containing salt. Prevention involves maintaining stable water parameters and regular substrate vacuuming.

When purchasing, choose active fish without visible damage to fins or skin. It is important to ensure the integrity of the barbels — their absence or damage indicates poor keeping conditions in the store. Healthy individuals should have a rounded belly, show interest in foraging on the bottom, and have no signs of emaciation or film on their bodies.