Ornate cory - Corydoras ornatus
Scientific name: Corydoras ornatus
Common name: Ornate 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 - 7.5
Recommended water hardness (dGH): 4 - 18°N (71.43 - 321.43ppm)
0°C 32°F30°C 86°F
Recommended temperature: 23 - 26 °C (73.4 - 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
Short Description
The Ornate Cory (Corydoras ornatus) is a peaceful and social bottom-dwelling fish native to the Rio Tapajós region of South America. With their intricate markings and gentle temperament, they are a popular choice for community aquariums. These fish thrive in groups of six or more and are an excellent addition to tanks with similarly peaceful species. Their active foraging behavior and ability to clean up leftover food make them both entertaining and practical inhabitants.
Origin
Ornate Corys are endemic to South America, specifically the Rio Tapajós and its surrounding areas. These fish inhabit slow-moving or still waters with sandy substrates and plenty of vegetation, which provide shelter and abundant feeding opportunities.
Tank Requirements
To accommodate their needs, a tank of at least 75 liters (20 gallons) is recommended. Maintain water parameters within a temperature range of 23-26°C (73.4-78.8°F), a pH between 6-7.5, and a hardness level of 4-18°N (71.43-321.43 ppm). Use fine sand or smooth gravel as substrate to protect their delicate barbels. Include plenty of hiding spots using plants, driftwood, and rocks, while leaving open spaces for foraging. A gentle water flow replicates their natural habitat and ensures their comfort.
Food and Feeding
Ornate Corys are omnivorous and will accept a variety of foods. Provide high-quality sinking pellets or wafers as their staple diet, supplemented with sinking algae wafers and occasional treats like bloodworms or brine shrimp. Feed them once or twice daily, ensuring that food reaches the bottom of the tank where they can easily access it. Regularly vary their diet to maintain their health and vitality.
Compatibility
Ornate Corys are exceptionally peaceful and make excellent tankmates for community setups. Suitable companions include small tetras, rasboras, and other non-aggressive species. Avoid pairing them with large or aggressive fish, as these can stress or harm the Corys. Keeping them in groups of six or more encourages natural behaviors and reduces stress.
Sexing
Sexing Ornate Corys is relatively simple when they reach maturity. Females are typically larger and have a stockier build compared to the more slender males. These differences are especially noticeable when viewed from above.
Breeding
Breeding Ornate Corys is straightforward and can be triggered by performing cooler water changes. During spawning, the female lays 3-4 eggs, which she carries in her pelvic fins to a chosen location where they are attached. This process is repeated until up to 100 eggs are laid. The eggs hatch in 4-5 days, and the fry become free-swimming shortly afterward. Feed the fry with newly hatched brine shrimp or infusoria to support their growth.
Lifespan
With proper care, Ornate Corys can live for 5-6 years. Maintaining a clean tank, providing a balanced diet, and housing them in a stress-free environment are crucial to ensuring their longevity.