Rabaut's Corydoras

Adults of this fish typically reach a length of about 5–6 cm. Their main coloration is a rich orange-rusty hue, with a broad dark stripe running along the upper part of the body, extending from the head to the tail. Their fins are translucent and lack any patterns. Additionally, there is an artificially bred form known as Cory Albino or Albino Corydoras. A distinctive feature of this morphological form is the complete absence of pigmentation: the body and even the eyes of the fish are completely white. Sexual dimorphism in this species is not pronounced; it is quite difficult to distinguish males from females. Nevertheless, females usually appear slightly larger, which becomes particularly noticeable during spawning when their abdomen rounds out with roe.

Rabaut's Corydoras inhabits South America, primarily in the upper Amazon River basin, including the Solimões and Rio Negro tributaries. In nature, it populates both riverine biotopes and floodplain lakes with slow currents. The water in its habitats is characterized by tropical parameters, softness, and variable acidity [fishbase.se], [seriouslyfish.com].

A peaceful schooling fish, exhibiting social behavior. For their comfort, it is recommended to keep a group of 4–6 or more individuals. Corydoras are bottom-dwelling, actively exploring the substrate. They are compatible with most non-aggressive fish, but due to their activity, they may disturb more timid or slow-moving bottom dwellers [seriouslyfish.com], [theaquariumwiki.com].

For keeping a school, an aquarium with a bottom area of at least 90x30 cm is required. Fine river sand or rounded gravel without sharp edges is essential as a substrate to avoid injuring the sensitive barbels of the catfish. Filtration, weekly water changes, and regular substrate cleaning are mandatory. The aquarium should preferably be planted and include driftwood to create hiding places [seriouslyfish.com], [zooeco.com].

An omnivorous species, feeding on small invertebrates and organic particles in nature. In the aquarium, they accept any high-quality sinking foods: specialized tablets for bottom fish, frozen bloodworms, Artemia, or tubifex. One should not rely solely on leftover food from other fish, as a complete diet is necessary for maintaining health and activity [seriouslyfish.com], [theaquariumwiki.com].

Breeding occurs in spawning tanks using a group of breeders, where there should be more males than females. A massive water change to cooler water and increased aeration serve as a stimulus. The female lays eggs on the substrate or aquarium glass. After spawning, the parents are removed to prevent them from eating the clutch. Fry are sensitive to water quality and require careful care [seriouslyfish.com], [zooeco.com].

The species is sensitive to deteriorating water quality, accumulation of organic matter, and high nitrate levels, which can lead to barbels damage and skin infections. Like all Corydoras, these fish tolerate the addition of salt to the aquarium poorly. Caution should be exercised during handling: their fins have sharp spines capable of inflicting a painful prick, and toxic glands may be located at the base of the rays [seriouslyfish.com], [theaquariumwiki.com].

When purchasing, choose active fish with clean skin and intact barbels. Avoid individuals with sunken bellies, signs of ulcers, or body damage. In the store, the fish should show interest in foraging for food at the bottom. Given that this is a schooling species, it is recommended to acquire several individuals at once to reduce stress levels during adaptation [seriouslyfish.com], [theaquariumwiki.com].