Icana Cory Care Guide - Aquarium Setup, Diet & Breeding

The Icana Cory, Corydoras incolicana, is a small armoured catfish known in the aquarium trade as C001. Its compact body, underslung mouth and paired barbels are typical of the Corydoras group, while its attractive dark-and-light patterning gives it a distinctive appearance among smaller blackwater corys. Like other members of its genus, it has bony plates rather than ordinary scales and a sharp-looking defensive spine in the dorsal fin.

This is a peaceful, lively bottom-dweller that spends much of its time investigating the substrate with its barbels. It may rest briefly and then dart to the surface to gulp air, an ability shared by many Corydoras and supported by its specialised intestine. Its most natural behaviour is seen when it lives alongside several of its own kind, when the fish forage and move together with confidence.

In the wild, Icana Corys inhabit quiet or gently flowing parts of the Rio Negro system. These waters are often shaded by dense forest, enriched with fallen leaves and branches, and coloured brown by dissolved tannins. The species is associated with the distinctive blackwater habitats of the region rather than open, heavily mineralised rivers.

Corydoras incolicana remains less commonly encountered than familiar species such as the Bronze Cory, making it an appealing choice for aquarists interested in unusual South American catfish. It is best appreciated as an active, social species whose natural charm lies in its group behaviour and subtle patterning.

Corydoras incolicana is native to the upper Rio Negro basin in Amazonas, north-western Brazil, South America. It comes from soft, acidic blackwater environments with leaf litter, submerged wood and dark, tannin-stained water.

A group of Icana Corys should have at least a 60-litre aquarium, with a footprint of approximately 60 × 30 cm or larger; a longer tank is preferable to provide uninterrupted bottom space. Use soft fine sand or another smooth, rounded substrate to protect their sensitive barbels, together with driftwood, leaf litter, shaded areas and hardy plants. Gentle filtration, good oxygenation and open feeding areas are important, while tannin-stained blackwater conditions can be recreated with botanicals or wood if desired. The aquarium must be mature, stable and free from sharp decorations or accumulated waste.

Up to about 4.5 cm (1.8 in) in total length. Females are generally the larger and broader sex, while males usually remain closer to 4 cm (1.6 in).

Offer a varied diet of sinking micro-pellets, quality catfish tablets and small granules, supplemented with frozen or live foods such as bloodworm, daphnia, cyclops and mosquito larvae. Their natural feeding behaviour involves searching through the bottom sediment for small invertebrates, but they should not be expected to survive on scraps alone. Feed after other fish have received surface food when necessary, so enough sinking food reaches the group.

Icana Corys are peaceful community fish and can be housed with similarly gentle small tetras, pencilfish, rasboras, small peaceful South American cichlids such as Apistogramma, and other calm bottom-dwellers. Suitable catfish companions may include other peaceful Corydoras where space allows. Avoid large or aggressive cichlids, fin-nipping species, boisterous feeders and fish large enough to swallow them, as well as highly aggressive bottom-dwellers that may compete for shelter and food.

Icana Corys are egg-scattering spawners and can be encouraged to breed with plentiful high-quality food followed by partial water changes using slightly cooler, clean water. A female carries the eggs between her pelvic fins while a male fertilises them, after which the eggs are placed on aquarium glass, plant leaves or other smooth surfaces. Remove the adults or protect the eggs from predation; the eggs usually hatch in around three to five days, and the tiny fry can be raised on suitably fine foods before progressing to larger live or prepared foods.

Females are typically broader through the body, especially when viewed from above, and are usually slightly longer than males. Males tend to be slimmer and more streamlined; outside of body shape and size, the sexes are not strongly different in colour.