Horseman's Cory Care Guide - Aquarium Setup, Diet & Breeding

Horseman's Cory is a small, attractively marked armoured catfish with a high-backed profile and a distinctive dark stripe running through the eye and along the upper side of the body. Depending on mood and lighting, its flanks can show silvery, bronze or greenish tones, while the fins are generally translucent with subtle darker markings.

Like other Corydoras, it spends much of its time close to the substrate, using its sensitive barbels to search for edible fragments. It is peaceful, active and sociable, often resting together in a group before suddenly setting off in a burst of energetic bottom-feeding activity. It also regularly darts to the surface to gulp air, a natural behaviour made possible by its modified intestine.

In the wild, this species is associated with warm Amazonian waters, where seasonal changes alter flow, depth and water chemistry. Its barbels are particularly well suited to investigating soft bottoms and leaf litter, although they are easily damaged by coarse or sharp substrates.

The name Horseman's Cory refers to its characteristic body shape and markings rather than to any aggressive behaviour. It is a charming community catfish whose most natural behaviour is seen when it is kept with others of its own kind.

Horseman's Cory comes from the upper Amazon basin of South America, with records associated with Brazil and Peru. It inhabits calm or gently flowing tributaries, forest streams and shallow margins with soft, sediment-rich bottoms.

A group of Horseman's Cory should be provided with an aquarium of at least 60 litres, ideally measuring around 60 cm long by 30 cm wide or more, so there is useful uninterrupted floor space. Use a soft sand substrate or very smooth fine gravel to protect the delicate barbels, along with driftwood, rounded stones, hardy plants and shaded areas created by broad leaves or floating vegetation. Gentle to moderate water movement, strong filtration and high oxygen levels are beneficial, while open areas should remain available for foraging. A secure lid is advisable because Corydoras can leap when startled.

Females reach approximately 5.5 cm (2.2 in) in length, while males are usually smaller at around 4.5 cm (1.8 in).

Feed a varied diet based on good-quality sinking catfish pellets or tablets, supplemented with frozen or live foods such as bloodworm, brine shrimp, daphnia and grindal worms. Occasional finely chopped earthworm or other suitably sized meaty foods can provide variety. Although it will investigate leftover food, it should not be expected to survive on scraps alone; make sure food reaches the bottom and offer enough for the whole group without allowing uneaten food to decay.

Horseman's Cory can live with other peaceful, similarly sized community fish such as small tetras, pencilfish, peaceful rasboras, otocinclus and other calm Corydoras species. Small, non-aggressive gouramis and gentle livebearers may also be suitable. Avoid large or boisterous fish, fin-nippers, predatory species and territorial cichlids, as these may outcompete, injure or intimidate this bottom-dweller. It should not be housed with fish that require substantially different water conditions or that habitually disturb the substrate.

Horseman's Cory is an egg-scattering species that can be bred in a mature, peaceful aquarium. Keep a group with several males to each female and condition them with plentiful live or frozen foods. A series of cooler, well-oxygenated water changes often triggers spawning, after which the adults scatter adhesive eggs over plant leaves, aquarium glass or other smooth surfaces. Remove the eggs or move the adults if you want to raise a large number of fry. Incubation usually takes around three to five days, and the tiny fry can be started on microworms or other suitably small foods once their yolk sacs have been absorbed.

Females are generally longer-bodied, broader and deeper through the abdomen than males, particularly when carrying eggs. Males are slimmer and slightly smaller, with a more streamlined profile.