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Vieja maculicauda

Blackbelt Cichlid

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Last revised 2026Edit this page

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Vieja maculicauda pair, male at bottom
Vieja maculicauda pair, male at bottomHippocampus-Bildarchiv

Quick factsEdit

Max size
254mm SL10in SL
Aquarium size
120 × 38cm48 × 15in
Temp
22–27°C72–81°F
pH
6.0–8.0
Hardness
not recorded

Difficulty4 of 8 measures

Easy

How the rating is worked out

Space
large tank
Water
flexible
Temp
flexible
Diet
unknown
Temperament
territorial
Social
unknown
Compatibility
unknown

Other demands

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

Hardiness
unknown

The blackbelt cichlid, Vieja maculicauda, is a large cichlid found from the Usumacinta basin in Guatemala south to the River Chagres in Panama. It takes its name from the vertical black stripe around its flank and from its toughness. It lives in slow-moving rivers and lakes, sometimes in brackish or even marine conditions, and should only be kept with similarly aggressive fish of similar size.

Distribution

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Found throughout much of Central America, where its range extends southwards from the River Usumacinta basin in Guatemala through Honduras, Nicaragua and Costa Rica as far as the River Chagres in Panama.

Inhabits slow-moving and still parts of rivers as well as many lakes, especially over substrates of mud or sand. It's particularly associated with habitats centred around submerged branches and tree roots, or where aquatic and/or marginal vegetation grows densely. In certain parts of its range populations can be found living in brackish and occasionally even full marine conditions.

Aquarium size

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Standard length
254mm SL10in SL
Aquarium base
120 × 38cm48 × 15in
Volume
~205litres~54US gal

48"L x 18"H x 15"W (120cm x 45cm x 37.5cm) - 213 litres

Maintenance

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Blackbelts like a sandy or fine gravel substrate. Simulate their natural habitat by providing lots of cover in the form of bits of wood (mopani, driftwood, bogwood). Blackbelt Cichlids thrive in lower lighting conditions so it may be beneficial to use floating plants to help dim the light.

Water conditions

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Temperature
22–27°C72–81°F
pH
6.0–8.0
Hardness
not recorded

Temperature: 22 – 27 °C72 – 81 °F

pH: 6.0 to 8.0, around 7.0 is optimal

Hardness: 8 to 16°dH

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

Almost exclusively herbivorous, although like most fish it still does best with a degree of protein in the diet. Wild fish graze on algae, detritus, fruits, nuts and both aquatic and terrestrial plant material.

Behaviour and compatibility

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A fairly aggressive cichlid, should only be housed with similarly aggressive, similar sized fish. Will see smaller fish as food. Can be exceptionally aggressive when looking after fry.

Sexual dimorphism

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Males are larger with more vivid colouration. Mature Blackbelt males will develop the nuchal hump on their head.

Reproduction

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The Black belt Cichlid becomes sexually mature at around 15 centimetres in size, or at least 6 months old.

Modify water parameters to be pretty much in the middle of all the aforementioned water parameters - 26 degrees celsius, pH 7 etc.

500 to 600 eggs will be laid on a flat piece of rock or stone. Eggs will be aggressively guarded and cleaned by the parents. Fry will hatch in 2 to 3 days and will be moved to previously created spawning pits all over the tank. A week later they will be free swimming.

Notes

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The Blackbelt Cichlid gets its name from two things: firstly the vertical black stripe around its flank, and secondly its toughness. Vieja maculicauda is a tough, aggressive fish and should be respected as such.

Maculicauda is a relatively easy fish to keep. They are not impossible to breed, but not the easiest fish either. If you seriously intend to breed this fish, it is a wise decision to house 6 juvenile fish in a large tank (212 litres at least), and let them pair off. When a pair has been found, rehome the other fish.

A very interesting, colourful addition to a central/north American aggressive cichlid tank.