Breeding Corydoras punctatus

Breeding Corydoras punctatus: water parameters, the T-position with 2-4 eggs cupped in the pelvic fins, and ~100 eggs per spawn.

Overview

Corydoras punctatus (also placed in the genus Hoplisoma) is a callichthyid catfish of the Suriname River basin in Suriname and the Iracoubo River basin in French Guiana, where FishBase notes it inhabits small, moderately sunny, shallow creeks with sandy to sandy-muddy bottoms. It reaches about 6.6 cm SL, with recorded tolerances of pH 6.0-8.0, hardness 2-25 dH, and 22-26 C. Wikipedia lists it as Least Concern (IUCN, 2023).

Sexing

According to Wikipedia the sex is hard to tell until the fish are adult; sexual dimorphism is not readily apparent in juveniles.

Breeding Setup

Within the recorded tolerances (pH 6.0-8.0, 22-26 C, soft to moderately hard water), provide surfaces for the female to attach eggs to. Wikipedia describes the species as one that can breed easily.

Spawning Behaviour & Trigger

FishBase documents the spawning behaviour: the female holds 2-4 eggs between her pelvic fins, where the male fertilises them for about 30 seconds. This is the classic T-position used by the genus. The pair repeats the process until about 100 eggs have been fertilised and attached.

Egg & Fry Care

After the eggs are attached, they develop on the chosen surfaces. As FishBase does not give a hatch time for this species, fry-rearing should follow the general Corydoras approach of maintaining excellent water quality and offering small live foods once the yolk sacs are absorbed; these rearing details are the genus pattern rather than a species-specific record.