Benthochromis horii "Mahale Mountains NP"

Mahale Mountains NPmah-HAH-leh moh-oon-TAH-eens NP (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 Benthochromis horii account →

Specific to Mahale Mountains NP

  • 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 Benthochromis horii.

IUCNLEAST CONCERN · 2025
CARESNOT LISTED
Scientific size5.9 in15.1 cm standard length
Temperature75–81 °F24–27 °C
pH8.6–9.3alkaline
Depth66–413 ft20–126 m
DietPicks micro-zooplankton from open water
BreedingMaternal mouthbrooder3-5 eggs, rarely more than a dozen
Sexual dimorphismYesMales bluish-violet with three light-blue stripes and elongated pelvic and caudal filaments; females plain silvery-grey and unstriped.
PhotographsSee photosGoogle Images →

The Mahale Mountains NP population

Benthochromis horii "Mahale Mountains NP" is the Mahale Mountains NP population of Benthochromis horii, a geographic colour form from the Tanzania coast of Lake Tanganyika in the north-central part of the lake. It is the same species as Benthochromis horii, distinguished by its collection locality and local coloration; aquarists keep and breed it as a discrete, provenance-labelled line.

Colour reference: living Mahale Mountains NP fish at tanganyika.si

About the species

Benthochromis horii is a tall, deep-dwelling cichlid endemic to Lake Tanganyika, a graceful planktivore that drifts in dim water tens of meters down where few aquarium fish ever go. Males are arresting—bluish-violet with three luminous light-blue stripes and trailing pelvic and caudal filaments—while females stay a plain silvery grey. Only described in 2008, it absorbed nearly all the fish the hobby had been calling "Benthochromis tricoti" for decades, and it breeds by an oddly delicate strategy: a clutch of just a handful of eggs carried in the mouth for two months or more.

Full Benthochromis horii account →

Sources

  1. tanganyika.si — Benthochromis horii "Mahale Mountains NP"
  2. Catalog of Fishes (Eschmeyer) — Benthochromis horii
  3. FishBase — Benthochromis horii summary
  4. FishBase — Benthochromis horii field guide (size, environment)
  5. Takahashi, T. (2008). Description of a new cichlid fish species of the genus Benthochromis from Lake Tanganyika. J. Fish Biol. 72(3):603–613
  6. The taxonomic diversity of the cichlid fish fauna of Lake Tanganyika (ScienceDirect)