Pundamilia pundamilia Breeding Guide

Breeding Pundamilia pundamilia, the blue-backed Lake Victoria mouthbrooder and sister species of P. nyererei in a classic speciation pair.

Overview

Pundamilia pundamilia is a maternal mouthbrooding haplochromine endemic to the Tanzanian portion of Lake Victoria, reaching about 12.4 cm. It is the blue-backed sister species of P. nyererei: at sympatric sites the two persist together with some gene flow, yet maintain strong genetic differentiation. Males display blue-grey on the body with any red confined to the fins, contrasting with the red-dorsum nyererei.

Sexing

Males are vividly coloured while females are cryptically coloured and duller, the sole investors in parental care. The species belongs to a genus of five, all endemic to the southern portion of Lake Victoria, in which males generally carry the bright nuptial colours used in mate choice.

Conditioning

Condition the group on a varied omnivore diet with occasional live or frozen foods such as brine shrimp, bloodworm or daphnia. Good condition strengthens male colour, which is decisive because females exhibit strong colour-based mating preferences.

Breeding Setup

Breed in a species tank with a single male and at least three females; spawning also occurs in community aquaria. Provide suitable spawning sites such as flat rocks or caves so the male can hold and display over a territory.

Spawning Behavior & Trigger

Once a female selects a mate she lays eggs at the chosen spot, the male fertilises them, and she collects them into her mouth. As with related Victorian haps, the male's anal-fin egg spots prompt the female's collecting behaviour, during which fertilisation occurs in the mouth. Maternal mouthbrooding follows.

Egg & Fry Care

The female broods the clutch orally for roughly three weeks, as in this group of Victorian mouthbrooders, before releasing free-swimming fry. Released fry accept small first foods such as Artemia nauplii and powdered dry foods. Isolating a holding female protects the brood.

Common Challenges

The greatest risk is hybridisation: because mate choice is colour-based and P. pundamilia and P. nyererei are a sympatric sister pair that can interbreed, keep blue and red Victorian haps in separate tanks. Maintain a single male per group to reduce aggression and preserve clear male colour for assortative mating.