Metriaclima pyrsonotos

Metriaclima pyrsonotos is a mbuna native to the rocky shorelines of Lake Malawi, identified by its bold blue body and clearly defined dark vertical bars running along the flanks. Males are more intensely coloured, developing richer blues and deeper black barring during dominant display. Females are typically a drab brownish to pale grey.

Like other Metriaclima, this species is strictly herbivorous in the wild, grazing Aufwuchs algae from rock surfaces. It occupies shallow to mid-depth rocky habitat and is strongly territorial. A harem structure is recommended in captivity — one dominant male maintained with three or more females in a tank with abundant rockwork. The species is a reliable maternal mouthbrooder, with females carrying fry for 21–28 days. Aquarium water should replicate the hard, alkaline conditions of Lake Malawi for optimal health and colouration.