Collection point · Lake Malawi · Malawi

Chizumulu Island

chee-zoo-MOO-loo EYE-land (approx.)

The atlas records 40 collection-point forms from Chizumulu Island, across 21 genera.

12.0244°S 34.6241°E

Chizumulu Island is a Malawian island in Mozambican waters, about 12 km west-north-west of Likoma Island, and a source of mbuna exported under its own name.

Where it is

Chizumulu Island is in open water about 11 mi off the eastern shore, in the central third of Lake Malawi (176 mi south of the lake's northern tip).

Nearest collection points: Chiteko 0.6 mi north-east · Mkanila Bay 1.1 mi north-west · Machili Island 1.2 mi north-west

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: Salima (south-east shore) (~193 km) — Conductivity 235 µS/cm

This site

Habitatrockyisland in Mozambican waters, west-north-west of Likoma

Surface temperature here

Across Apr–Nov, monthly means run 76 °F to 82 °F — coolest in Aug. Measured by satellite 1995–2023: the daily median of clear readings within 10 km of the site (1079 clear days). The rainy-season months are usually too cloudy to measure and are left blank.

74°77°80°83°Jan: too few clear satellite days (0)–JFeb: too few clear satellite days (0)–FMar: too few clear satellite days (1)–MApr: 81 °F mean (80 °F–83 °F), 13 clear satellite daysAMay: 80 °F mean (78 °F–81 °F), 78 clear satellite daysMJun: 78 °F mean (77 °F–79 °F), 136 clear satellite daysJJul: 76 °F mean (75 °F–77 °F), 184 clear satellite daysJAug: 76 °F mean (75 °F–77 °F), 236 clear satellite daysASep: 77 °F mean (76 °F–78 °F), 227 clear satellite daysSOct: 80 °F mean (78 °F–81 °F), 147 clear satellite daysONov: 82 °F mean (80 °F–84 °F), 55 clear satellite daysNDec: too few clear satellite days (2)–D
Surface temperature by month near Chizumulu 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

Site photographs cover the island's northern and southern shores and its lighthouse, with Machili Island offshore. Together with Likoma, it is one of only two Malawian islands lying inside Mozambique's territorial waters.

Sources
  1. malawi.si — Chizumulu Island, Lake Malawi, Malawi: location page and photo gallery (captions by Christian D'Amour, Larry Johnson, Pete Barnes)
  2. Konings, A. (2016). Malawi Cichlids in their Natural Habitat, 5th Edition. Cichlid Press, El Paso.

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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