Synodontis petricola Care Guide - Aquarium Setup, Diet & Breeding

Synodontis petricola is a small, striking African catfish with a pale silver to cream body covered in bold dark spots and irregular markings. Its pattern provides excellent camouflage among the rocks of Lake Tanganyika, while the compact body makes it one of the more manageable Synodontis species for a suitably planned aquarium.

Like other members of its genus, it has three pairs of barbels around the mouth, a strong dorsal spine and a deeply forked tail. It is especially well known for swimming beneath ledges and along the underside of rocks, sometimes appearing to move upside down as it searches for food.

This species is generally peaceful with fish of an appropriate size and is most confident when kept in a small group. It is active at dusk and after dark, although well-established individuals often emerge during the day, particularly when several fish are housed together.

In the wild, Synodontis petricola inhabits the clear, hard, alkaline waters of Lake Tanganyika. Its natural surroundings are dominated by rock piles, crevices and sandy patches, and its association with mouthbrooding cichlids is central to its unusual reproductive strategy.

Synodontis petricola is endemic to Lake Tanganyika in East Africa, particularly the lake’s rocky shoreline habitats. It occurs in the waters of Tanzania, the Democratic Republic of the Congo, Burundi and Zambia.

A group of Synodontis petricola should have at least a 115-litre aquarium, with a footprint of roughly 90 by 40 cm; a larger tank is preferable when it is kept with Tanganyikan cichlids. Use a fine sand substrate or smooth rounded gravel, and build secure rockwork with caves, overhangs and narrow crevices. Leave some open sand for foraging, ensure all rocks are stable, and provide strong filtration with well-oxygenated, alkaline water. A temperature of 24–28°C and pH around 7.8–9.0 suit its Lake Tanganyika origins.

Up to 10 cm (4 inches) in adult length. Females are usually slightly larger and fuller-bodied than males.

Synodontis petricola is an omnivorous opportunist that searches the bottom for aquatic invertebrates, plant matter and organic food. Offer a varied diet of quality sinking catfish pellets or wafers, supplemented with frozen or live foods such as brine shrimp, bloodworm and daphnia. Occasional vegetable-based foods are useful, and feeding after the aquarium lights dim allows this nocturnally active catfish to eat without competition.

Suitable companions include peaceful Lake Tanganyika cichlids such as Neolamprologus shell dwellers, Julidochromis and smaller Altolamprologus, provided the aquarium offers enough territory and hiding places. It can also live with other similarly sized, robust Tanganyikan species that prefer hard, alkaline water. Avoid very aggressive or oversized cichlids, fin-nipping fish and small fish that could be swallowed at night; mixing it with soft-water community species is also usually unsuitable because their water requirements differ.

Synodontis petricola is a brood parasite in nature and commonly breeds alongside mouthbrooding Tanganyikan cichlids. The catfish scatter their eggs as a suitable cichlid is spawning, and the cichlid may accidentally collect and incubate the catfish eggs. Successful aquarium breeding usually involves a mature group, compatible mouthbrooding cichlids and excellent water quality; the young catfish develop quickly once free-swimming and should be offered suitably small foods.

Females are generally broader through the body and may grow slightly larger, while males tend to remain slimmer. The genital papilla is the most reliable way to sex mature fish, but it can be difficult to distinguish visually without experience.