Collection point · Lake Malawi · Malawi

Chimwalani Reef

cheem-wah-LAH-nee REEF (approx.)

The atlas records 22 collection-point forms from Chimwalani Reef, across 15 genera.

13.7706°S 34.9628°E

Chimwalani Reef, also known as Eccles Reef, is a rocky reef off Lake Malawi's Malawian shore, about 3 km east of Luwala Reef.

Where it is

Chimwalani Reef is in open water about 3.1 mi off the eastern shore, in the southern third of Lake Malawi (297 mi south of the lake's northern tip).

Nearest collection points: Luwala Reef 1.7 mi west · Chitedze Rock 2.8 mi north-west · Liwewe Reef 3.5 mi 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: Monkey Bay (south basin) (~28 km) — Visibility (Secchi) 12.5 m

This site

Habitatrockyrocky reef also known as Eccles Reef

Surface temperature here

Across Apr–Nov, monthly means run 74 °F to 81 °F — coolest in Jul. Measured by satellite 1995–2023: the daily median of clear readings within 10 km of the site (1483 clear days). The rainy-season months are usually too cloudy to measure and are left blank.

72°76°80°84°Jan: too few clear satellite days (2)–JFeb: too few clear satellite days (3)–FMar: too few clear satellite days (7)–MApr: 79 °F mean (77 °F–81 °F), 41 clear satellite daysAMay: 78 °F mean (76 °F–79 °F), 166 clear satellite daysMJun: 76 °F mean (75 °F–78 °F), 217 clear satellite daysJJul: 74 °F mean (73 °F–76 °F), 241 clear satellite daysJAug: 75 °F mean (74 °F–76 °F), 285 clear satellite daysASep: 76 °F mean (75 °F–78 °F), 291 clear satellite daysSOct: 79 °F mean (77 °F–82 °F), 159 clear satellite daysONov: 81 °F mean (79 °F–83 °F), 64 clear satellite daysNDec: too few clear satellite days (7)–D
Surface temperature by month near Chimwalani Reef — 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.

Sources
  1. malawi.si — Lake Malawi interactive locations map: Chimwalani Reef (Eccles Reef)

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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