Corydoras britskii Breeding Guide
Breeding notes for Corydoras (Brochis) britskii, the largest former-Brochis catfish, an egg-depositor from the upper Paraguay basin.
Overview
Corydoras britskii, now classified as Brochis britskii, is the largest of the former Brochis group, found in the upper Paraguay River basin in Brazil. Wikipedia records a maximum length of about 8.8 cm and notes a high dorsal-fin ray count (15-18) and a large ventral head shield. It is an egg-depositor: according to Wikipedia it lays eggs in dense vegetation and the adults do not guard them.
Sexing
Wikipedia provides no sexing detail. As in other large callichthyids of this group, mature females are expected to be rounder and broader-bodied than males when seen from above, particularly when gravid; this is presented as a genus-level expectation rather than a species-specific record.
Breeding Setup
- A large, well-oxygenated tank over fine sand for this big species
- Cool-to-temperate water: Wikipedia reports about 20-24 C
- Soft to moderately hard freshwater
- Fine-leaved plants, clean glass and spawning mops as egg sites
Spawning Behavior & Trigger
Wikipedia documents only that the species scatters eggs in dense vegetation without parental care. Following the pattern of Corydoras and the former Brochis, a large cooler water change is the usual spawning stimulus; this is offered as a genus-level approach rather than a species-specific report.
Egg & Fry Care
Because the adults do not guard the eggs, the clutch should be protected or moved to a separate hatching container. No species-specific fry-rearing protocol is published; breeders rear the fry as for other egg-scattering callichthyids, offering small live foods once they are free-swimming.