Phutunio Dwarf Barb Breeding Guide

Breeding Pethia phutunio, a tiny egg-scattering barb whose spawning is largely undocumented but follows the typical Pethia pattern.

Overview

Pethia phutunio is a tiny Bangladeshi barb. Seriously Fish notes that its reproduction is possibly unrecorded, so the breeding approach is based on closely related egg-scattering cyprinids, which show no parental care. Fry may occasionally appear in a mature, densely planted aquarium.

Sexing

Males are noticeably slimmer than females and carry a more intense colour pattern. The ventral fins differ by sex, being reddish in males and yellow in females. Females are fuller-bodied, particularly when carrying eggs.

Conditioning

Condition the adults together on a varied diet of small live, frozen and dried foods until the females are visibly gravid. This is the cue to set fish up for spawning.

Breeding Setup

Use a separate, dimly lit tank with mature water. Cover the base with mesh, plastic grass matting or glass marbles so eggs fall out of reach, or provide fine-leaved plants such as Taxiphyllum species or spawning mops. Add an air-powered sponge filter or air stone. Keep the pH slightly acidic to neutral and the temperature toward the upper end of the range.

Spawning Behavior & Trigger

Introduce one or two pairs of well-conditioned, gravid fish; spawning should take place the following morning. A group of around half a dozen of each sex can also be spawned together. Remove the adults promptly, as they will eat the eggs.

Egg & Fry Care

Eggs hatch in about 24 to 36 hours, with the fry free-swimming after roughly 3 to 4 days. Feed an infusoria-grade food for the first few days until the fry are large enough to take microworm, Artemia nauplii and similar foods.

Common Challenges

Because formal spawning records are lacking, expect to fine-tune conditions by observation. The very small fry need correspondingly small first foods, and the adults must be removed quickly to prevent egg loss.