Corydoras reticulatus, commonly known as the Reticulated Corydoras, is a small South American catfish native to the western Amazon Basin, where it is found primarily in Peru, Brazil, and Ecuador. Its range includes tributaries of the Marañón, Ucayali, Huallaga, Napo, and Putumayo/Içá river systems, as well as associated floodplain creeks, oxbow lakes, and seasonally inundated forest pools. These habitats are typically shallow, soft-water environments with sandy or silty substrates, leaf litter, submerged roots, and gentle to moderate flow. Seasonal flooding expands their available habitat and allows them to forage widely across forest floors and marginal zones. Adult Corydoras reticulatus reach around 2.25 to 2.5 inches in length and are recognized by their delicate silver bodies patterned with fine dark reticulation, giving them a net-like appearance. Their head spotting, lateral sheen, and characteristic Corydoras posture make them a visually attractive schooling catfish. As with most Corydoras species, they are highly social and display their best behavior, confidence, and coloration when kept in groups of six or more individuals. A tank of at least 20 gallons with a broad footprint is ideal, as these fish spend most of their time actively foraging along the bottom. Soft, fine sand is strongly preferred to protect their delicate barbels and allow natural sifting behavior. Driftwood, leaf litter, and gentle hardscape arrangements help recreate the shaded, structured environments they inhabit in the wild. Low to moderate flow is suitable, and strong oxygenation reflects the well-oxygenated streams and flooded areas they frequent. Water conditions should mirror the warm, soft character of their native habitats, with temperatures between 72 and 79°F, a pH of 5.8 to 7.2, and soft to moderately soft water. Corydoras reticulatus thrives in clean, stable aquariums with regular water changes and low levels of dissolved waste. They are sensitive to poor substrate hygiene, so gentle maintenance of the bottom area is important. Feeding Corydoras reticulatus is simple, as they readily take a variety of small sinking foods. In the wild they consume insect larvae, microcrustaceans, biofilm, and organic detritus sifted from fine sediment. In captivity they accept high-quality sinking micro-pellets, frozen daphnia and bloodworms, baby brine shrimp, and finely powdered foods. Their constant foraging behavior makes them an active and beneficial part of the aquarium cleanup crew, though they still require regular targeted feeding. The Reticulated Corydoras is peaceful and well suited to community aquariums with similarly small, gentle species. They coexist easily with tetras, rasboras, dwarf cichlids, pencilfish, hatchetfish, and other calm tankmates. They should not be housed with aggressive or boisterous bottom dwellers that may outcompete or harass them. Breeding Corydoras reticulatus is possible but less commonly achieved than with more widely kept Corydoras species. Typical breeding behavior includes active chasing among males, a female collecting eggs in her pelvic fins, and placement of adhesive eggs on plants, glass, or hard surfaces. Soft, cool water changes and abundant oxygenation can help trigger spawning. Corydoras reticulatus is a graceful, active, and beautifully patterned schooling catfish that thrives in peaceful, planted aquariums with soft substrates, clean water, and calm tankmates, offering constant motion and highly social behavior in the lower levels of the tank.
