Black-top Cory

Corydoras amapaensis is native to the rivers of Amapá state in northeastern Brazil, a region heavily influenced by the Guiana Shield and characterised by soft, acidic, tannin-rich waters. Its most distinctive feature is a dark dorsal saddle — a large pigmented area covering the top of the body from the head to the dorsal fin — that fades into a pale cream or white lower flank and belly.

This species is almost never found in mainstream fishkeeping retail and is primarily available through specialist importers who source fish directly from Brazil or Suriname. It is a fish for the dedicated cory collector who wants representative coverage of the genus's geographic diversity.

Once established in an appropriate soft-water setup, C. amapaensis is a rewarding and undemanding fish. Standard cory husbandry applies: fine sand substrate, group of six or more, clean water with regular partial changes, and a varied sinking diet. Indian almond leaves and driftwood will help replicate its naturally tannin-rich environment.

Water: Soft and slightly acidic, pH 5.8–7.0, temperature 23–27°C; tannin-rich conditions strongly beneficial. Tank: 80 L with fine sand, leaf litter, and driftwood; subdued lighting reduces stress. Feeding: Sinking pellets, frozen Tubifex, bloodworm, and Daphnia; varied diet twice daily. Breeding: Not documented; soft water and live food conditioning expected to be necessary. Compatibility: Peaceful; best in soft-water Amazonian and Guiana Shield community setups.