Oreochromis karongae "Thundu"Chambo
Oreochromis karongae (Maleri Island, Thundu, Zimbawe Rock)
Thundu — TOON-doo (approx.)
The fish
How this cichlid is built, and everything about how it lives, eats and breeds, is shared with the species — this page doesn't repeat it.
Read the full Oreochromis karongae account →Specific to Thundu
- Collection locality & coordinates
- Local coloration — best judged from the living-fish photo
- Kept as a single-provenance line, never crossed with other collection points
Care facts below are the species' — shared with Oreochromis karongae.
The Thundu population
Oreochromis karongae "Thundu" is the Thundu population of Oreochromis karongae, a geographic colour form from the Mozambique coast of Lake Malawi in the south-central part of the lake. It is the same species as Oreochromis karongae, distinguished by its collection locality and local coloration; aquarists keep and breed it as a discrete, provenance-labelled line.
Colour reference: living Thundu fish at malawi.si →
About the species
Oreochromis karongae is one of three large tilapias that Malawians call "chambo" — the most prized food fish in the country and, for generations, the backbone of Lake Malawi's commercial fishery. It is a maternal mouthbrooder endemic to the Lake Malawi catchment, where territorial males turn jet black and dig broad sand craters to court greyish-brown females. That commercial value is also its undoing: decades of overfishing have driven chambo catches toward collapse, and the IUCN now lists Oreochromis karongae as Critically Endangered.
Full Oreochromis karongae account →Sources
- malawi.si — Oreochromis karongae "Thundu"
- Catalog of Fishes (Eschmeyer) — Oreochromis karongae
- FishBase — Oreochromis karongae (Karonga tilapia / Chambo)
- GBIF — Oreochromis karongae (Trewavas, 1941)
- Chavula et al. 2023 — Lake Malawi/Niassa/Nyasa basin: Status, challenges, and research needs (J. Great Lakes Res. 49(6):102241)
- Maturity, age and growth of Oreochromis karongae in Lakes Malawi and Malombe (African J. Aquatic Science)
- IUCN Red List — Oreochromis karongae "Thundu"