Brochis haraldschultzi

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Brochis haraldschultzi, also called Mosaic Cory, is a peaceful South American catfish valued for its contrasting reticulated pattern and schooling behavior. Native to Bolivia, it inhabits slow sections of waterways in the Mamoré basin, where it searches the bottom for food. This species is offered less often than common Corydoras and deserves a mature aquarium with soft substrate and consistently clean water. Like other members of the Callichthyidae, it periodically rises to the surface to gulp air. Wild specimens require careful acclimation and a varied diet from the moment they arrive.

General species description

Brochis haraldschultzi is a stocky, schooling bottom catfish belonging to the genus Brochis and the family Callichthyidae. It is best kept in a group of at least six individuals, which encourages natural behavior and helps reduce stress. Its activity includes exploring the substrate, searching for food and making brief trips to the surface. This peaceful species suits a calm community aquarium without aggressive fish or excessively boisterous competitors. Its commercial rarity makes it a sought-after fish among specialist aquarists. The specimens offered here are wild-caught, so quarantine and gradual acclimation are especially advisable.

Geographical origin and biotope

The species comes from Bolivia, in the upper Madeira basin associated with the Rio Mamoré system. It inhabits slow to moderately flowing areas, often shallow, where the bottom consists of sand, silt and decaying plant material. Banks may be lined with emergent vegetation and submerged branches that provide shade and shelter. In an aquarium, gentle to moderate flow, well-oxygenated water and subdued lighting reproduce these conditions better than strong circulation or a highly open, mineral-looking layout.

Precise locality and local name

Aquarium references associate Brochis haraldschultzi with the Rio Mamoré basin in Bolivia. The most common trade name is Mosaic Cory, referring to the pattern formed by dark lines and markings across the head and body. The name Corydoras haraldschultzi also remains widespread in fish lists, although the species is now placed in the genus Brochis. To avoid confusion, buyers should check the scientific name and declared collection origin when purchasing this fish.

Appearance and physical characteristics

The body of Brochis haraldschultzi is stocky, armored and slightly compressed, with an inferior mouth surrounded by sensory barbels. Its base color ranges from silvery gray to beige and is marked with dark networks and spots that create its characteristic mosaic appearance. The fins are translucent and may show yellowish or orange tones. As with other armored catfish, the pectoral-fin rays can be rigid and sharp, so handling should be done with a suitable net. The maximum reported length is about 7.5 cm.

General diet

Brochis haraldschultzi is a benthic omnivore that actively searches the substrate for small prey and organic matter. Its diet should be based on quality sinking tablets, supplemented with frozen or live foods such as mosquito larvae, brine shrimp and suitable worms. Food must reach the bottom, since this species should not depend on leftovers from midwater fish. Evening feeding often encourages natural behavior. A varied, protein-rich diet helps wild specimens regain condition quickly, while consistent water quality remains equally important.

Essential data

• River of origin: Rio Mamoré
• Local name used: Mosaic Cory
• Origin of the scientific name: Genus Brochis; species epithet dedicated to Harald Schultz
• Etymology of the full name: Brochis comes from Greek and refers to the throat or gills; haraldschultzi honors Harald Schultz
• Common or vernacular names: Mosaic Cory; Corydoras haraldschultzi
• Family: Callichthyidae
• Subfamily: Corydoradinae
• Pronunciation: broh-kiss har-ald-SHOOLT-see
• Discovery: Knaack, 1962
• Maximum adult size: About 7.5 cm
• Water temperature and pH: 22 to 28 °C; pH 6.0 to 7.5
• Appearance of the watercourse and surrounding vegetation: Slow to moderately flowing areas, sandy or silty bottom, woody debris and streamside vegetation
• Typical tankmates: Brochis splendens, Hoplisoma sterbai, Microgeophagus altispinosus, Hyphessobrycon bentosi
• Temperament and behavior: Peaceful, schooling, active on the bottom and constantly searching for food
• Water depth: Shallow to moderate areas
• Sexual dimorphism: Females are generally broader and heavier-bodied; males are more slender
• Bottom layout and flow: Fine non-abrasive sand, leaves and roots; low to moderate flow

In your aquarium

To successfully keep Brochis haraldschultzi, provide a group, fine sand and efficient filtration without excessive current. Stable, well-oxygenated water with regular maintenance is essential, especially for wild-caught specimens. Add hiding places, shaded areas and a varied sinking diet. Since this species is very rare in the aquarium trade, every individual deserves slow acclimation and close observation during the first few weeks.