岩歧须鮠 · Dwarf Lake Synodontis

Overview

A relatively small, peaceful Tanganyikan catfish, Synodontis petricola is more confident in a group. Captive reproduction is established, while routine care combines hard-water conditions, cave cover, and room to swim.

Distribution & habitat

It is endemic to Lake Tanganyika.

Aquarium setup

For a group, use a 90 by 30 by 30 cm aquarium as the reference. Rock piles should form caves without filling all swimming space. Dim lighting encourages activity in view. Plan water chemistry around the fish’s lake origin rather than a miniature trade label.

Diet & feeding

Genus-level advice favors a varied combination of live, frozen, and prepared foods with vegetable matter. Live and frozen foods also help condition prospective breeders.

Behaviour & compatibility

Maintain at least four because lone fish are often secretive. Appropriately sized hard-water cichlids, rainbowfish, or livebearers are potential companions; very small fish remain unsuitable. Claims about a dwarf form’s wider adaptability should not automatically apply to every specimen.

Sexual dimorphism

Mature females have rounder abdomens. Small size makes handling-based genital inspection unsuitable as a routine method.

Breeding

It usually scatters eggs openly, with accounts also describing brood parasitism involving mouthbrooding cichlids. In that case the host carries the eggs; the catfish is not itself a mouthbrooder. A separate clean spawning aquarium with rock or pot shelters gives more control, using a conditioned pair or group.

Spawning follows male pursuit and may involve a T-like position or parallel quivering. Remove adults afterward to protect the eggs. Hatching takes about 24 hours, with free swimming another two or three days later. Start with microscopic foods before Artemia nauplii and fine powdered food. Growth is slow, potentially taking six months or more to reach sale size. Cave-spawning reports suggest offering sheltered sites as well.