Collection point · Lake Malawi · Malawi

Mumbo Island

MOOM-boh EYE-land (approx.)

The atlas records 34 collection-point forms from Mumbo Island, across 18 genera.

13.9895°S 34.7553°E

Mumbo Island lies off Cape Maclear on Lake Malawi's south-western shore, just north of Jumbo Island.

Where it is

Mumbo Island is in open water about 6.2 mi off the western shore, in the southern third of Lake Malawi (312 mi south of the lake's northern tip).

Nearest collection points: Jumbo Island 0.2 mi south · Three Peaks Reef 2.5 mi north-east · Zimbawe Rock 3.5 mi north-east

Shore, third and distances are measured from the coordinates above against the lake’s mapped outline.

The water

Lake-wide measured chemistry of Lake Malawi — collection points share their lake's water; site-specific figures are shown only where the literature records them.

Temperature75.2–84.2 °F24–29 °C
pH8.2–8.6alkaline
Hardnessmoderately soft, alkaline, well-buffered79 ppm
Conductivity≈250–260 µS/cmmeasured range

Nearest measured station: Monkey Bay (south basin) (~18 km) — Visibility (Secchi) 12.5 m

This site

Habitatrockysmall island off Cape Maclear, near Jumbo Island

Surface temperature here

Across Apr–Nov, monthly means run 75 °F to 82 °F — coolest in Jul. Measured by satellite 1995–2023: the daily median of clear readings within 10 km of the site (1447 clear days). The rainy-season months are usually too cloudy to measure and are left blank.

73°76°79°82°Jan: too few clear satellite days (1)–JFeb: too few clear satellite days (4)–FMar: too few clear satellite days (7)–MApr: 80 °F mean (78 °F–82 °F), 43 clear satellite daysAMay: 78 °F mean (77 °F–80 °F), 154 clear satellite daysMJun: 76 °F mean (75 °F–78 °F), 204 clear satellite daysJJul: 75 °F mean (74 °F–76 °F), 227 clear satellite daysJAug: 75 °F mean (74 °F–76 °F), 285 clear satellite daysASep: 76 °F mean (74 °F–78 °F), 297 clear satellite daysSOct: 79 °F mean (77 °F–82 °F), 152 clear satellite daysONov: 82 °F mean (79 °F–83 °F), 65 clear satellite daysNDec: too few clear satellite days (8)–D
Surface temperature by month near Mumbo Island — dot = mean, bar = typical range (10th–90th percentile), “–” = too cloudy to measure.

Temperature: ESA Climate Change Initiative, Lakes_cci v3.0 (Asfour et al. 2026; doi:10.5285/a56dba09df8a42ec9fba8b8c7a5e1f69). Chemistry on this page remains the lake's own.

The site

A 1971 photograph documents an unauthorised fishing village that had been established on the island. Jumbo Island and its offshore rocks, including Chimney Rocks (also called Tooth Rock), lie just to the south.

Sources
  1. malawi.si — Mumbo Island, Lake Malawi, Malawi: location page and photo gallery (captions by Michael K. Oliver, Pam Chin)

Each entry below is the population of that species recorded here — the form aquarists keep and breed as a distinct, provenance-labelled line. Crossing forms from different collection points is considered hybridisation in the hobby.

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