Longsnout corydoras - Corydoras treitlii

Scientific name: Corydoras treitlii

Common name: Longsnout 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: 6.4 - 7.1

Recommended water hardness (dGH): 5 - 20°N (89.29 - 357.14ppm)

0°C 32°F30°C 86°F

Recommended temperature: 20 - 27 °C (68 - 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

Food and Feeding

Longsnout Corydoras are omnivorous and thrive on a well-rounded diet. Offer a staple diet of quality flakes, algae wafers, or sinking pellets to ensure proper nutrition. These bottom-dwellers enjoy bi-weekly treats of live or frozen bloodworms and brine shrimp, which keep them healthy and active. Since they feed primarily at the bottom, ensure that food reaches their level to prevent competition from mid-water tank mates.

Origin

Native to South America, Corydoras treitlii are found in the freshwater rivers and tributaries of Brazil. These waters are typically soft and slightly acidic, with sandy or fine gravel substrates that protect their delicate barbels. Mimicking these conditions in the aquarium helps them thrive and display natural behaviors.

Sexing

Sexing Longsnout Corydoras becomes easier as they mature. When viewed from above, females appear slightly larger with a more rounded body shape, particularly during the breeding season. Males are slimmer and slightly smaller.

Breeding

Breeding Corydoras treitlii in captivity remains a challenge, as there are no reported successful attempts in aquariums. In the wild, these fish are egg scatterers, depositing their eggs on plants, or substrate. To attempt breeding, provide a well-planted breeding tank and simulate seasonal changes by performing cooler water changes. Eggs, if laid, should be removed to a separate tank to prevent predation, and the fry can be fed Infusoria followed by newly hatched brine shrimp.

Lifespan

With proper care and a clean environment, Corydoras treitlii can live for 3-5 years in captivity.

Tank Setup and Behavior

Longsnout Corydoras are social and peaceful, making them excellent additions to community tanks. Keep them in groups of at least five individuals to promote natural schooling behavior and reduce stress. A sandy or fine gravel substrate is essential to protect their barbels from injury. Include plenty of hiding places such as driftwood, caves, and plants to replicate their natural habitat.

They coexist well with non-aggressive tank mates, such as:

• Neon Tetras – Small and colorful companions.
• Harlequin Rasboras – Peaceful schooling fish.
• Ember Tetras – Ideal for maintaining a harmonious tank.
• Otocinclus Catfish – Complementary bottom dwellers.
• Bolivian Rams – Gentle dwarf cichlids that pair well with Corydoras.

Short Description

Longsnout Corydoras, known for their peaceful demeanor and striking appearance, are a delightful addition to any community tank. Though rare in the aquarium trade, their manageable size, social nature, and compatibility with other peaceful species make them highly desirable among aquarists. Provide a suitable environment, and they will reward you with their active and engaging behavior.

Picture

Bought by aqua-fish.net from jjphoto.dk.