Corantijn Cory

Geographic Origin and Biotope: Suriname: endemic to the Corantijn River basin (Kabalebo River). A very elusive species, it lives in quiet clear-water forest streams, with wooded banks and a bottom full of twigs and natural debris (gallery forest habitat).

Taxonomy and Morphology: Also identified under Lineage codes or C-Numbers before classification. Typical Corydoras shape, blunt and round snout, medium size around 4.5 - 5 cm (1.8-2 inches). Like all true Corydoras it possesses defensive bony plates and powerful spines on the pectoral fins.

Social Behavior: Moderately active species. Due to the highly gregarious temperament, form a robust starting colony (6-10 individuals minimum). Without the perception of their peers, they spend entire days terrified, hidden in the dark of the rocks and refusing food.

Coloration and Sexual Dimorphism: Subdued but characteristic livery. Beige/grayish body. The most salient visual trace is a black band mask vertically crossing the eye (similar to C. panda), but followed by small, very fine black spots along the base of the caudal peduncle and on the dorsal. Females always taller and more robust in the belly.

Aquarium Setup: Typical Suriname biotope setup: construction sand (siliceous and edgeless), knotty roots, and branches inserted like mangroves. Lighting must not blind them; use of lush floaters (Limnobium laevigatum) recommended. Moderate filtration without a "torrent effect".

Diet and Feeding: Carnivorous grazer. Although they clean the bottom of discarded food, they are not satisfied with vegetable feed. Sinking tablets rich in Krill and fish flesh, thawed bloodworms (1-2 times a week). The use of live microworms triggers feeding hyperactivity.

Water Quality: Classic temperatures 22-26°C (72-79°F). Soft to moderately soft waters (GH 2-12). Preferable slightly acidic pH 6.0-6.8. They demand mature water rich in humic acids but very poor in nitrogenous pollutants: a balanced system prevents sudden mortality.

Compatibility and Tankmates: Impeccable member of peaceful community tanks. Excellent companions are small pencilfish (Nannostomus), hatchetfish (Carnegiella), and Tetras native to Guyana. Highly unrecommended in the presence of aggressive loaches or freshwater pufferfish.

Aquarium Reproduction: Very similar to C. panda. Commercial attempts are rare. Pushed to reproduce by "fake rain" cycles with cold RO water mimicking the monsoon. The clear, viscous eggs are scattered singly or in small batches on Anubias leaves. Isolation necessary for rescuing the fry.

Risks and Diseases: Loss of tactile whiskers (on gravel), bacterial infections (Columnaris or Aeromonas) due to poor bottom hygiene. Extreme vulnerability and lethality induced by the administration of Copper doses during Velvet/Ich treatments performed on other host fish.