Synodontis Petricola Breeding Guide

Synodontis petricola is bred regularly in aquaria, spawning over rocks or in caves; eggs hatch in about 24 hours and it is also a brood-parasite of mouthbrooding cichlids.

Overview

Synodontis petricola is a small mochokid catfish from Lake Tanganyika and, unlike most of its genus, is actually bred fairly often in aquaria. It can spawn over rocks or in caves in a dedicated setup and is also a brood parasite of mouthbrooding cichlids in nature.

Sexing

Mature, well-conditioned adults are easiest to pair, and ripe females become noticeably fuller-bodied with eggs. Keeping a group of several individuals improves the chance of forming spawning pairs or groups.

Conditioning

Condition the fish on live and frozen foods in clean, low-nitrate water at typical Tanganyikan parameters (around 24-28 C, pH 7.5-8.5, hard water). Good conditioning brings ripe females and active males into spawning readiness.

Breeding Setup

A separate breeding tank with rock piles or terracotta pots and minimal nitrates is the most reliable method. Pairs or small groups can spawn together, with cave spawning also documented under established conditions.

Spawning Behavior & Trigger

Males pursue females before spawning, adopting a stance similar to the 'T' position seen in Corydoras breeding. In the wild the catfish times its spawning to coincide with a host mouthbrooding cichlid and lays its eggs among the host's eggs; the catfish eggs hatch faster, and the fry consume the host's eggs while the cichlid continues to guard them.

Egg & Fry Care

Eggs hatch in approximately 24 hours, and the fry become free-swimming after about 2-3 days. Start the fry on infusoria, progressing to brine shrimp nauplii and powdered flake; they typically take six or more months to reach saleable size.

Common Challenges

Maintaining very clean, low-nitrate water and providing suitable rockwork or caves are the main husbandry requirements. The principal challenge is bringing fish into condition and securing the eggs and tiny fry, which are vulnerable to predation in a community setting.