Xenotilapia ochrogenys Breeding Guide

Breeding Xenotilapia ochrogenys, a sand-sifting Tanganyikan cichlid: a maternal mouthbrooder best spawned in a female-skewed group.

Overview

Xenotilapia ochrogenys is a sand-sifting cichlid endemic to Lake Tanganyika, where it favours sandy substrates (Wikipedia). The genus Xenotilapia contains both maternal-only and biparental mouthbrooders, and peer-reviewed phylogenetic work classifies X. ochrogenys as a maternal mouthbrooder (peer-reviewed study of Xenotilapia parental care). It feeds by taking mouthfuls of sand and sifting them through the gills.

Sexing

Males grow larger than females and develop stronger fin colouration; ripe females become rounded in the belly when carrying mature eggs. As reliable visual sexing is otherwise limited, breeders are typically obtained by growing on a group.

Conditioning

Condition the group on a varied diet of small invertebrate foods that suits a micropredatory sand-sifter, keeping water hard and alkaline in line with the species' Tanganyikan origin.

Breeding Setup

Provide an open sandy substrate with some rockwork for orientation. Because this is a maternal mouthbrooder spawned in groups, a good-sized school of around 10 fish, skewed toward females, is advised; females may abort their first one or two spawns through inexperience or aggression.

Spawning Behavior & Trigger

As a maternal mouthbrooder, the female takes up the fertilised eggs and incubates the entire brood herself, without transferring it to a male (peer-reviewed study). Spawning takes place over the sand within the group's territory.

Egg & Fry Care

The female carries the eggs and larvae in her mouth throughout incubation and does not feed during this period. Once released, fry of sand-dwelling Xenotilapia generally accept fine first foods such as brine shrimp nauplii. Precise egg counts for X. ochrogenys were not confirmed in a whitelisted source and are omitted.

Common Challenges

Note: this species is a maternal (not biparental) mouthbrooder, which contrasts with several of its biparental congeners. First-time females aborting broods and the need for a settled, female-heavy group are the main practical hurdles.