Paralabidochromis chromogynos Breeding Guide

Breeding Paralabidochromis chromogynos, a marbled Lake Victoria maternal mouthbrooder of conservation interest with limited published data.

Overview

Paralabidochromis chromogynos (also placed as Haplochromis chromogynos) is a haplochromine endemic to Lake Victoria, growing to about 11 cm SL and listed by the IUCN as Vulnerable (2010). It is a maternal mouthbrooder. Species-specific aquarium breeding accounts are scarce, so this guide presents the breeding pattern that is well documented across Lake Victoria haplochromines, of which all species are maternal mouthbrooders.

Sexing

As in Lake Victoria haps generally, males are the colourful sex and intensify their pattern at breeding, while females are duller and are the sole investors in parental care. Mature males carry egg-spot markings on the anal fin used during spawning. Detailed sexual-colour descriptions specific to this species are limited in the literature.

Conditioning

Condition adults on a varied omnivore diet in stable hard, alkaline Victorian water to bring females into spawning condition and to develop male display colour.

Breeding Setup

Use the standard Victorian-hap approach: a species tank with one male and several females, furnished with rockwork and open sand so a male can establish and display over a territory. Multiple females spread out courtship aggression.

Spawning Behavior & Trigger

Spawning follows the Lake Victoria haplochromine pattern: a male displays at his site, the female lays eggs and takes them into her mouth, and the male's anal-fin egg spots prompt collecting behaviour during which fertilisation occurs orally.

Egg & Fry Care

The female broods the eggs and larvae in her mouth; Lake Victoria haplochromines typically hold for roughly two to three weeks before releasing free-swimming fry, which accept small first foods such as brine shrimp nauplii. A holding female can be isolated to protect the brood.

Common Challenges

Because precise brood size, incubation time and colour cues for this species are not well documented, observe holding females directly and treat genus-level figures as a guide. As a Vulnerable species, maintain its captive line carefully and keep it from hybridising with other Victorian haps.