False julii cory - Corydoras trilineatus

Scientific name: Corydoras trilineatus

Common name: False julii cory

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 - 18°N (71.43 - 321.43ppm)

0°C 32°F30°C 86°F

Recommended temperature: 22 - 26 °C (71.6 - 78.8°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

False Julii Corys (Corydoras trilineatus) are omnivorous and require a balanced, varied diet to maintain their health and vibrant appearance. Their staple diet should consist of high-quality sinking pellets or wafers designed for bottom-dwelling species. Additionally, supplement their meals with algae wafers to ensure they receive plant-based nutrients. To keep them in top condition, offer them occasional treats of protein-rich live or frozen foods, such as bloodworms or brine shrimp, once or twice a week. This not only provides essential variety but also mimics the types of food they would naturally forage for in the wild.

Origin

Native to the freshwater rivers and streams of South America, False Julii Corys are commonly found in the waterways of Colombia, Peru, and Brazil. They inhabit slow-moving, well-oxygenated rivers and tributaries with soft, sandy substrates, often surrounded by dense aquatic vegetation. Their natural habitat is usually shaded by overhanging plants and trees, providing shelter and reducing direct sunlight exposure.

Sexing

Sexing False Julii Corys can be somewhat tricky, but adult females are typically larger and have a rounder, more robust body compared to the males. Males tend to be slimmer, especially when viewed from above. These subtle differences become more noticeable as the fish reach maturity, especially during the breeding season when the females may become more visibly plump due to egg development.

Breeding

Breeding Corydoras trilineatus can be relatively easy with the right conditions. This species is capable of spawning either in pairs or in groups, which makes them ideal for community tanks with other Corydoras species. To trigger spawning, perform a large water change using slightly cooler water, which simulates the conditions of the rainy season in their natural habitat. Females can lay up to 100 adhesive eggs, which are usually attached to plants, tank glass, or decorations. The eggs will hatch within 4-5 days, depending on the temperature of the tank. Once the fry are free-swimming, they can be fed on newly hatched brine shrimp or Infusoria. Ensuring that the water quality is excellent is critical for the survival of the fry.

Lifespan

With proper care, False Julii Corys can live for up to 5 years in captivity. However, their longevity is closely tied to the quality of the environment they are kept in. Regular maintenance of water parameters, a healthy diet, and a stress-free environment are essential for their full lifespan.

Short Description

False Julii Corys are peaceful, social fish that thrive in groups of at least five individuals. Like all Corydoras, they are highly active bottom dwellers, constantly foraging for food. Due to their social nature, they should never be kept alone as they can become shy and stressed without the companionship of others. A well-planted aquarium with plenty of hiding places, such as driftwood, caves, or dense vegetation, will make them feel secure. At the same time, open swimming space is essential to allow them to explore the tank freely. A soft, sandy substrate is crucial for these fish to prevent damage to their sensitive barbels as they sift through the substrate for food.