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Lophiobagrus cyclurus

African Bullhead

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Last revised 2026Edit this page

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Quick factsEdit

Max size
100mm SL3.9in SL
Aquarium size
75 × 30cm30 × 12in
Temp
23–26°C73–79°F
pH
7.5–9.0
Hardness
15–30dGH

Difficulty4 of 8 measures

Moderate

How the rating is worked out

Space
medium tank
Water
flexible
Temp
needs a steady temperature
Diet
unknown
Temperament
eats smaller fish
Social
unknown
Compatibility
unknown

Other demands

Each of these can raise the rating on its own, whatever the measures above say.

Hardiness
unknown

The African bullhead, Lophiobagrus cyclurus, is a small claroteid catfish endemic to Lake Tanganyika. It hides among rocks by day and forages after dark, and it lives in most communities of Tanganyikan catfish and cichlids, though very small fish will be eaten. It is rumoured to secrete a poisonous mucus when stressed that can kill other fish in the aquarium, which is one reason to house it in as large a tank as possible.

Distribution

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It hides among rocks during daytime hours, emerging to forage under cover of darkness.

Aquarium size

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Standard length
100mm SL3.9in SL
Aquarium base
75 × 30cm30 × 12in
Volume
~68litres~18US gal

75 ∗ 30 ∗ 30 cm30 ∗ 12 ∗ 12 in - ~68 litres~18 US gal bare minimum, although larger is recommended (see below).

Maintenance

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Should be housed in a Lake Tanganyika biotope setup, with piles of rocks arranged to form caves in which it can seek refuge. Provide areas of open water for swimming. Dim lighting will encourage it to be seen more often.

Water conditions

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Temperature
23–26°C73–79°F
pH
7.5–9.0
Hardness
15–30dGH

Temperature: 23 – 26 °C73 – 79 °F

pH: 7.5-9.0

Hardness: 15-30°H

These recommendations come from this profile’s own figures. They contain affiliate links, so we may earn a commission.

Omnivorous and unfussy. Frozen, live and dried foods are all accepted.

Behaviour and compatibility

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Although very small fish will be eaten, it will live happily in most communities of Tanganyikan catfish and cichlids. It can also be kept in small species groups without problems.

Sexual dimorphism

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Unknown.

Reproduction

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Rarely bred in aquaria but it has been achieved. Apparently, the breeding pair lay their eggs in a rocky cave, and the eggs hatch in around 4-5 days. No extended parental care has been recorded, so if you do get a spawn, it may be wise to remove the parents/fry to a separate tank.

Notes

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An interesting addition to the Tanganyikan community that is not often seen in the hobby. There is a rumour that this cat can secrete a poisonous mucous when stressed that can kill other fish in the aquarium but this has not yet been 100% confirmed. It may be wise to keep it in as large an aquarium as possible just in case. There are currently just 4 species of Lophiobagrus described. All are from Lake Tanganyika.