Duplicate Corydoras

Duplicate Corydoras key facts

Care level

Intermediate

Lifespan

4-6 years

Size

4-5cm

Temperature

20〜26℃

Diet

Sinking dried foods, frozen bloodworm, Tubifex

Tank

Use fine rounded sand with wood and leaf litter for cover, and never block access to the water surface.

Water Temperature & Quality

20-26C, pH 4.0-7.0, 1-5dGH; soft, acidic water is preferred. FishBase records 22-26C, pH 6.0-8.0 and 2-25dH in the wild.

Tank Mates

Peaceful and gregarious; keep at least four to six. Pair it with fishes of similar water requirements, such as soft-water characins.

Diet & Feeding

A foraging omnivore. Offer sinking dried food plus frozen bloodworm and Tubifex. It must never be expected to live on leftovers or to clean the tank.

Breeding & Spawning

Use two males per female. Once females are gravid, make a 50-70 percent water change with cooler water and raise oxygenation and flow. Eggs are laid on glass, fine-leaved plants or spawning mops.

Health & Notes

Listed as Data Deficient by the IUCN Red List. It closely resembles Hoplisoma adolfoi, so a shop label alone may not identify which species you have.

About Duplicate Corydoras

A small catfish with a white body, black eye stripe, broad dark diagonal band, and an orange nape patch. Native to the upper Rio Negro, it favors soft, acidic water and suits intermediate keepers.

7 things to know before welcoming a Duplicate Corydoras

1. 1Prefers Soft, Acidic Water

   In the wild, this species lives in the soft, slightly acidic waters of the upper Rio Negro. Keeping tank water close to that range helps it stay healthy and settled.

2. 2How to Tell It Apart

   Look for the white body, black eye stripe, broad dark diagonal band, and bright orange patch behind the head. It closely resembles Corydoras adolfoi, but its diagonal band is noticeably wider.

3. 3Calm and Social by Nature

   This is a peaceful species that rarely bothers tankmates. Keeping several together lets them display their natural schooling behavior along the substrate.

4. 4Choose Soft Substrate

   These fish forage along the bottom and probe the sand with their barbels, so sharp or coarse gravel can damage them. Fine, rounded sand is a safer choice.

5. 5Pick Peaceful Tankmates

   Housing them with aggressive species can leave them stressed and hiding. Calm, similarly sized fish, or their own kind, make better companions.

6. 6Watch for Water Quality Stress

   Living near the substrate makes them sensitive to declining water quality. Frayed barbels or dull coloring can be early signs of trouble, so regular water changes and observation matter.

7. 7Cycle the Tank Before Bringing Them Home

   Make sure the tank's filtration is fully established before adding new fish. Avoid placing them straight into a brand-new setup, and acclimate them slowly to the new water.

Frequently asked questions about Duplicate Corydoras

Q.How difficult is Corydoras duplicareus to keep?

A.It's generally considered suitable for intermediate keepers. It isn't extremely demanding, but understanding basic water quality management, especially maintaining soft, slightly acidic water similar to its natural habitat, helps it thrive.

Q.Can it live with other fish?

A.Yes, its calm temperament makes it compatible with other peaceful species. Aggressive or very large tankmates are best avoided.

Q.How is it different from Corydoras adolfoi?

A.The two species look very similar, but Corydoras duplicareus is said to have a wider dark diagonal band along its side. Their ranges also overlap in the upper Rio Negro.

Q.What water conditions does it need?

A.Since it naturally lives in soft, slightly acidic water, keeping tank parameters close to that range helps it stay healthy. Avoid sudden water changes and maintain a regular maintenance schedule.

Q.Is this species regulated under CITES?

A.Corydoras duplicareus is not subject to CITES.

Useful tools for Duplicate Corydoras care

Learn more about Duplicate Corydoras in the encyclopedia

More in this category