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Tropheus Duboisi, Tropheus duboisi
Lake Tanganyika · Species profile

Tropheus Duboisi care

Relatively peaceful toward other species but fights with its own kind. Very active.

  • Up to about 4.5 inches, not counting the tailAdult size
  • 73 to 81 FTemperature

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Food

A diet based on vegetable matter such as spirulina flakes and pellets, with only small amounts of live or frozen food.

Feeding guide

Tank mates

Julidochromis, Eretmodus and other algae grazers with a similar diet.

Compatibility guide

Best setup

A tank at least 5 feet long and 18 inches front to back for a group. Stacked rock with caves and crevices, sand, and hard alkaline water with a high pH. Keep the water very stable, with steady small changes rather than big swings.

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In the fish room

Tropheus Duboisi in color

Bold color, real personality, natural-looking setups. The look that makes you stop in a great fish store.

Tropheus Duboisi, full body
Tropheus Duboisi, full body
Tropheus Duboisi in the aquarium
Tropheus Duboisi in the aquarium
Tropheus Duboisi color and form
Tropheus Duboisi color and form
Tanganyika rock wall
Tanganyika rock wall

Care basics

Young duboisi are among the best known cichlids in the hobby, with white or light blue spots on a jet black body. As they mature the spots fade and adults turn blue black with a yellow or white band.

Like all Tropheus they are prone to bloat, so feed a vegetable based diet and keep the water very stable. They do best in a large group in a big tank, and new fish are rarely accepted into an established group. Not a fish for beginners.

Quick facts

Scientific nameTropheus duboisi
GroupLake Tanganyika
Native toLake Tanganyika, rocky areas in deeper water
Adult sizeUp to about 4.5 inches, not counting the tail
Tank sizeA tank at least 5 feet long and 18 inches front to back for a group
Temperature73 to 81 F
pH8.0 to 9.5, hard water
TemperamentRelatively peaceful toward other species but fights with its own kind. Very active.

Figures follow published species profiles such as Seriously Fish, and tank sizes are general guidance. Individual fish and local water vary, so test your water and ask your fish store about the specific fish you buy.

Where to buy

In stock online for Tropheus Duboisi

We check these online sellers that ship. Partners show up first. Local shops are listed separately as visit the store.

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  • Imperial Tropicals
    0.5-1” Unsexed F1 'Maswa'In stock, checked 2:00 PM ET
  • Wet Spot Tropical Fish
    Tropheus duboisiIn stock, checked 2:00 PM ET
Sold out at last check (1)

Stock checked 2:00 PM ET on 2026-10-27. A fish can sell out between checks.

Local fish stores

Walk-in shops are listed as visit the store only. We do not claim their stock online. Find a store near you.

Ozzy the oscar holding a shopping bag
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Shop the Tropheus Duboisi setup

The tank, food, filter, heater and decor that suit Tropheus Duboisi, based on the care notes above.

Product photos link to Amazon so you can compare current prices. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Disclosure.

Amazon kits

Buy the whole setup for this fish

A complete Amazon cart of gear we recommend for this species. Review every item on Amazon before you buy.

Buy the whole setup

55-gallon Mbuna / African setup

A classic four-foot Malawi rock tank: tank, strong filter, heater, spirulina food, holey rock and African sand.

Add the whole setup to your Amazon cart (8 items)

8 Amazon listings in this kit. You review and confirm before buying.

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Gear We Recommend

Gear for Tropheus Duboisi

All gear
Hikari Cichlid Excel Floating Pellets
Best for: Mbuna and other grazers

Hikari Cichlid Excel Floating Pellets

A veggie heavy diet helps prevent bloat in Malawi rock dwellers.

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CaribSea Texas Holy Rock 40 lb
Best for: African rock tanks

CaribSea Texas Holy Rock 40 lb

Lots of caves and it gently buffers hardness for Malawi and Tanganyika fish.

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Fluval 407 Performance Canister Filter
Best for: 55 to 100 gallon tanks

Fluval 407 Performance Canister Filter

Quiet multi-stage canister that is the workhorse of mid-size cichlid tanks.

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All Glass Aquarium 125-Gallon
Best for: Oscars and big cichlid communities

All Glass Aquarium 125-Gallon

Six feet of swimming room for big New World cichlids.

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Buy from a cichlid store. Find a local fish store near you or a trusted seller with fish in stock online.