Amapa Cory

Geographic Origin and Biotope: Endemic to the state of Amapá in Brazil, northern Amazon basin (e.g., Amapari River basin). Inhabits clear or slightly amber forest streams flowing over bottoms of very fine sand, clay, and tangles of submerged roots.

Taxonomy and Morphology: Member of the Callichthyidae family. Distinguished by an elongated, saddle-like snout (long-snouted), highly profiled compared to classic round-snouted corydoras. It is a medium-large species that can exceed 6-6.5 cm (2.5 inches) in length.

Social Behavior: "Long-snouted" Corydoras tend to be slightly less hyper-active during the day compared to short-snouted ones, but remain strictly schooling fish (minimum 6 specimens). They dig very deep into the sand to extract food thanks to their specialized morphology.

Coloration and Sexual Dimorphism: Very elegant and subtle livery: silvery-gray body crossed by a thick mid-dorsal black line that descends from the back along the flanks parallel to the lateral line. The snout has slight punctate spotting. Females are visibly wider and taller in the ventral profile.

Aquarium Setup: Due to the elongated snout specialized for plunging into the substrate, an extremely fine river sand substrate is MANDATORY. Insert many intricate branches (driftwood) and plants like Echinodorus to create large sheltered areas. Water with gentle movement.

Diet and Feeding: Benthic carnivore. The conformation of the snout suggests a diet based on extracting worms from deep within the substrate. Regularly offer live or frozen Tubifex, bloodworms, white worms, and high-quality protein sinking pellets.

Water Quality: Requires pristine water: long-snouted species are often less tolerant to organic pollutants (nitrates) than commercial species like aeneus. Optimal temperature: 23-27°C (73-81°F), weakly acidic pH 6.0-7.2. Regular and copious water changes are essential.

Compatibility and Tankmates: Calm and harmless. Excellent companion for very high-quality Amazonian community tanks. Shares the tank in harmony with schools of small Tetras, peaceful Loricariids, Apistogramma (which live in the same basins), and Dicrossus.

Aquarium Reproduction: Difficult, rarely achieved without targeted effort. Requires a hyper-protein diet followed by strong thermal drops (changes with cold RO water) and increased oxygenation. They lay very large eggs (but few in number) among fine-leaved dense vegetation or mops.

Risks and Diseases: If kept on unsuitable or sharp substrates, the long snout and barbels wear out quickly, leading to fatal bacterial septicemia. Very sensitive, like other siluriformes, to copper-based medications and malachite green.