Collection point · Lake Malawi · Malawi

Otter Island

OT-ter EYE-land (approx.)

The atlas records 14 collection-point forms from Otter Island, across 8 genera.

14.0408°S 34.8214°E

Otter Island is an island off Lake Malawi's Malawian shore, under 1 km south-west of Otter Point.

Where it is

Otter Island is on the eastern shore of Lake Malawi, in its southern third (316 mi south of the lake's northern tip).

Nearest collection points: Otter Point 0.2 mi north-east · Mitande Reef (Rocks) 1.1 mi north · Thumbi West Island 1.6 mi north

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) (~11 km) — Visibility (Secchi) 12.5 m

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 (1452 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 (8)–MApr: 80 °F mean (78 °F–82 °F), 43 clear satellite daysAMay: 78 °F mean (77 °F–80 °F), 155 clear satellite daysMJun: 76 °F mean (75 °F–78 °F), 199 clear satellite daysJJul: 75 °F mean (74 °F–76 °F), 221 clear satellite daysJAug: 75 °F mean (74 °F–76 °F), 285 clear satellite daysASep: 76 °F mean (74 °F–78 °F), 303 clear satellite daysSOct: 79 °F mean (77 °F–82 °F), 153 clear satellite daysONov: 82 °F mean (79 °F–83 °F), 71 clear satellite daysNDec: too few clear satellite days (9)–D
Surface temperature by month near Otter 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 show the island beside Otter Point, and the view south from the island's shore.

Sources
  1. malawi.si — Otter Island, Lake Malawi, Malawi: location page and photo gallery (captions by Pam Chin, Pete Barnes)

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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