Undu Reef
OON-doo REEF (approx.)
The atlas records 25 collection-point forms from Undu Reef, across 13 genera.
11.3725°S 34.8831°E
Undu Reef is the shallow, intermediate habitat that extends underwater from the rocky promontory at Undu Point, on Lake Malawi's Tanzanian shore.
Where it is
Undu Reef is on the eastern shore of Lake Malawi, in its central third (131 mi south of the lake's northern tip).
Nearest collection points: Hai Reef 5 mi south-east · Chuwa 7.5 mi north-west · Mbamba Bay 8.7 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.
Nearest measured station: Salima (south-east shore) (~270 km) — Conductivity 235 µS/cm
This site
Surface temperature here
Across May–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 (991 clear days). The rainy-season months are usually too cloudy to measure and are left blank.
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.
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.