Adolfo's Corydoras Care Guide - Aquarium Setup, Diet & Breeding

Adolfo's Corydoras is a beautifully marked small catfish, recognised by its pale cream to silvery body, bold black stripe running from the snout over the eye and a dark dorsal-fin marking. A warm orange or copper-coloured area often appears behind the head, adding to its distinctive appearance. The species is one of the most sought-after Corydoras in the aquarium hobby.

Adolfo's Corydoras comes from the upper Rio Negro basin in Amazonas, Brazil, in northern South America. It inhabits clear to blackwater streams and tributaries associated with the Rio Negro drainage.

A group should be kept in an aquarium of at least 60 litres, with a footprint of around 60 by 30 cm or larger. Use soft sand or very smooth fine gravel so the sensitive barbels are not damaged, and provide open areas for foraging alongside shaded retreats, driftwood and broad-leaved or fine plants. Gentle filtration, good oxygenation and stable, clean water are important, while leaf litter and subdued lighting can help recreate the species' natural blackwater surroundings.

Up to about 5.5 cm (2.2 inches) in total length. Females are usually larger and broader-bodied than males; males commonly reach around 4.5–5 cm (1.8–2 inches).

This omnivorous bottom-feeder should receive a varied diet of quality sinking catfish pellets or wafers, supplemented with frozen or live foods such as bloodworm, daphnia, mosquito larvae and brine shrimp. Feed appropriately sized portions that reach the substrate, and do not rely on leftover food or algae alone to meet its nutritional needs.

Adolfo's Corydoras is peaceful and works well with similarly gentle community fish. Suitable companions include small tetras, pencilfish, rasboras, peaceful dwarf cichlids, otocinclus and other non-aggressive Corydoras. Avoid large or predatory fish, fin-nippers, boisterous feeders and aggressive bottom dwellers that may outcompete, injure or intimidate them.

Adolfo's Corydoras are egg-scattering fish that can be bred in a mature aquarium. Condition a group with plenty of high-quality foods, including frozen or live offerings, then encourage spawning with a series of cooler, soft-water changes. A female usually carries a few adhesive eggs between her pelvic fins before placing them on aquarium glass, plants or other smooth surfaces, while several males compete to fertilise them. Remove the adults or protect the eggs from predation; the eggs generally hatch in around three to five days, and the fry can be raised on very fine foods such as microworms and powdered fry food before progressing to newly hatched brine shrimp.

Females are typically longer, deeper-bodied and noticeably plumper than males, especially when carrying eggs. Males are slimmer and slightly smaller, with a more streamlined profile.