Stoliczka's Barb Breeding Guide

How to breed Pethia stoliczkana: an egg-scattering barb spawned over mesh or fine plants with no parental care.

Overview

Pethia stoliczkana is a small Asian cyprinid that, like most small barbs, is an egg-scattering free spawner showing no parental care. According to Seriously Fish, it may spawn spontaneously in a mature, well-planted aquarium, but a dedicated set-up gives far better fry yields and lets the keeper protect the eggs from being eaten.

Sexing

Adult males are noticeably slimmer and more colourful than females, with the difference most obvious in the unpaired and ventral fins. Females are rounder-bodied, especially when carrying eggs, and are more subdued in colour.

Conditioning

Condition the adult group together on small live, frozen and good-quality dried foods until the females fill out with eggs. Well-conditioned, plainly gravid females are the trigger for moving fish into the spawning tank.

Breeding Setup

Use a separate, dimly lit aquarium filled with mature water. Cover the base with mesh, plastic grass matting or a layer of glass marbles so the eggs fall through out of the parents' reach, or use clumps of fine-leaved plants such as Taxiphyllum species or spawning mops. Add an air-powered sponge filter or air stone for gentle oxygenation. Keep the pH slightly acidic to neutral and the temperature toward the upper end of the species range, around 26 °C.

Spawning Behavior & Trigger

Once the females are gravid, introduce one or two pairs; spawning should normally take place the following morning. Alternatively a group of around six fish of each sex can be spawned in a larger tank. The adults will eat any eggs they can reach and should be removed as soon as eggs are noticed.

Egg & Fry Care

The eggs hatch within roughly 24 to 48 hours, and the fry become free-swimming about 24 hours later. Feed an infusoria-grade food for the first few days, then move on to microworm, Artemia (brine shrimp) nauplii and similar small foods as the fry grow.

Common Challenges

The main difficulty is egg predation by the parents, so prompt removal of the adults is essential. First foods must be small enough for the tiny fry, and stable, mature water in the rearing tank helps reduce early losses.