Iridescent corydoras - Corydoras rabauti

Scientific name: Corydoras rabauti

Common name: Iridescent corydoras

Family: Callichthyidae

Usual size in fish tanks: 5 - 6 cm (1.97 - 2.36 inch)

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Recommended pH range for the species: 6 - 8

Recommended water hardness (dGH): 4 - 20°N (71.43 - 357.14ppm)

0°C 32°F30°C 86°F

Recommended temperature: 22 - 27 °C (71.6 - 80.6°F)

The way how these fish reproduce: Spawning

Where the species comes from: South America

Temperament to its own species: peaceful

Temperament toward other fish species: peaceful

Usual place in the tank: Bottom levels

Introduction

Corydoras rabauti, commonly known as the Iridescent Corydoras, is a peaceful bottom-dwelling species native to the rivers and tributaries of Brazil in South America. Their gentle temperament, attractive metallic sheen, and suitability for community tanks make them a popular choice among aquarists. While many specimens are wild-caught, their unique appearance and behavior make them worth the investment for enthusiasts.

Food and Feeding

Iridescent Corydoras are omnivorous and thrive on a varied diet. Provide high-quality flake or sinking pellet food as their staple diet. Supplement this with algae wafers to support their health. Once or twice a week, offer live or frozen treats such as bloodworms or brine shrimp, which they will eagerly consume. Feeding in the evening ensures they have access to food without competition from more active tank mates.

Habitat and Tank Requirements

To replicate their natural environment, use a sandy substrate to protect their delicate barbels. Include plenty of hiding spots such as driftwood, rocks, and dense plant cover with species like Amazon Swords (Echinodorus bleheri) and Java Fern (Microsorum pteropus). Maintain water parameters within a pH range of 6-8, hardness of 4-20°N (71.43-357.14 ppm), and a temperature between 22-27°C (71.6-80.6°F). Regular water changes and a gentle current are essential to mimic their natural habitat and ensure optimal health.

Sexing

Sexing Corydoras rabauti is relatively straightforward. Females are noticeably wider when viewed from above, particularly during the breeding season when they are carrying eggs.

Breeding

Breeding Corydoras rabauti follows the typical procedure for Corydoras species. To encourage spawning, perform regular water changes with cooler water to simulate seasonal rains. The female lays approximately 100 eggs, which are scattered on plants, substrate, or tank glass. The eggs typically hatch within 3-4 days. Once the fry become free-swimming, feed them with Infusoria or newly hatched brine shrimp. As they grow, crushed flake food can be introduced gradually.

Lifespan

The expected lifespan of Iridescent Corydoras is 3-5 years when provided with proper care and a stable environment.

Behavior and Compatibility

Like other Corydoras species, Iridescent Corydoras are peaceful, social fish that thrive in groups of at least five. Their calm demeanor makes them ideal companions for non-aggressive species such as Neon Tetras (Paracheirodon innesi), Harlequin Rasboras (Trigonostigma heteromorpha), and Otocinclus Catfish (Otocinclus affinis). They can also coexist with peaceful cichlids, such as Angelfish (Pterophyllum scalare) or Apistogramma species. Avoid keeping them with aggressive or overly boisterous fish, as this can cause stress and limit their natural activity.

Short Description

Corydoras rabauti, or Iridescent Corydoras, is a beautiful and peaceful bottom-dweller that adds charm and activity to community aquariums. Their metallic sheen and social nature make them a joy to observe in groups. Providing a well-planted, calm environment with soft substrates will ensure they thrive in captivity. As many are wild-caught, they may come at a higher price, but their unique appearance makes them a worthwhile addition to any aquarium.