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Fish Freshwater Care: medium Semi-aggressive

African Bullhead

Lophiobagrus cyclurus
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Other names: Lophiobagrus cyclurus, Tanganyika bullhead catfish, Lophiobagrus
Group: Other catfish · Family: Claroteidae · Origin: Africa — Lake Tanganyika (endemic)

A small, dark, round-tailed Lake Tanganyika catfish that stays at 10 cm. It breeds in pairs in caves and guards its young; when stressed it releases a skin secretion that is toxic to other fish.

Will it suit my tank?

Last updated October 16, 2026

Temperature
24–27°C
pH
7.5–9
Hardness
10–20 dGH
Adult size
10 cm
Minimum tank size
100 liters
Social structure
Pair
Swimming zone
Bottom
Diet
Omnivore
Breeding
Substrate spawner

Water parameters

Temperature24–27°C
pH7.5–9
General hardness (GH)10–20 dGH
Recommended range
Eats shrimp Suitable for planted tanks

Overview

October 16, 2026 · Suggest an edit

Lophiobagrus cyclurus is a small catfish living in the rocky areas of Lake Tanganyika. It is recognized by its dark brown to black body, broad head, small eyes and rounded tail; "cyclurus" in its scientific name also refers to the rounded tail. Adults stay at around 10 cm. Important warning: when stressed it releases a skin secretion that is toxic to other fish; being together with other fish, especially in a transport bag or small container, can kill them. Always transport it in a separate bag.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 100 liters for a pair.
  • Caves made from rock piles; a pair claims one cave as its nest.
  • 24–27°C, pH 7.8–9.0, hard water; Tanganyika aquarium parameters.
  • Fine sand substrate and good oxygenation.

Diet

October 16, 2026 · Suggest an edit

Omnivorous. It eats sinking granules and tablets, frozen bloodworms, mysis and brine shrimp. Because it is nocturnal, feed in the evening.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Nocturnal and territorial; it defends its cave resolutely, especially when it has young. It eats the fry of other fish and dwarf shrimp. It breeds in pairs in the aquarium; the eggs are laid in a cave and the parents guard the young for a while.

Good companions: Tanganyika cichlids that keep to their own cave territory (Neolamprologus, Julidochromis), Tanganyika Synodontis.

Avoid: dwarf shrimp, species that need soft water, crowded aquariums with a shortage of caves.

A short profile for this species

The African Bullhead page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Usually compatible

Should not be kept together

Hobbyist notes

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Change history and contributors
  1. Page created · October 16, 2026