The Emerald Brochis, scientifically known as Brochis splendens, is a larger relative of the Corydoras catfish, native to the upper Amazon Basin in Peru, Ecuador, and Colombia. In the aquarium trade it is often called the Emerald Cory or Emerald Green Catfish, though it belongs to a different but closely related genus. Adult Emerald Brochis typically reach about 3 to 3.5 inches (7.5 to 9 cm), noticeably larger than most Corydoras. They have a deep, stocky body with a shimmering metallic green coloration across the flanks, often flashing blue or gold depending on the light. The fins are reddish to brownish, with the pectorals in mature males developing elongated rays. A tank of at least 30 gallons is suitable for a group. These catfish are shoaling and should always be kept in groups of six or more to promote natural behavior. Provide a soft sand substrate to allow them to sift without damaging their barbels, along with driftwood, smooth rocks, and sturdy plants for cover. They are active but peaceful, and appreciate both shaded areas and open spaces for foraging. Water parameters should include a temperature of 72 to 79°F (22 to 26°C), a pH between 6.0 and 7.5, and soft to moderately hard water. Clean, well-oxygenated water with regular partial changes is important, as these fish are sensitive to deteriorating conditions. Feeding Brochis splendens is easy. They are omnivores that readily take sinking catfish pellets, algae wafers, and a wide range of live and frozen foods such as bloodworms, daphnia, and brine shrimp. They will also scavenge leftovers from other fish but should not be relied upon solely as “cleaners.” Emerald Brochis are peaceful and well-suited to community aquariums with small to medium non-aggressive tankmates like tetras, rasboras, gouramis, and dwarf cichlids. Avoid large, aggressive species that may harass or outcompete them. Breeding in captivity is rare, but when successful it follows the same T-position egg-laying behavior seen in Corydoras. Females deposit adhesive eggs on glass, plants, or décor. Adults may eat eggs, so a dedicated breeding setup is best. Fry can be fed infusoria or powdered fry food before moving on to baby brine shrimp. Brochis splendens (Emerald Brochis) is a hardy, brilliantly colored schooling catfish that adds activity, size, and metallic sheen to peaceful South American community aquariums.
