Tropheus annectens

Tropheus annectens is the most morphologically distinct member of the Tropheus genus, featuring a noticeably elongated snout and a more slender, streamlined body compared to the stockier T. moorii. It inhabits the southern regions of Lake Tanganyika along wave-exposed rocky shores and is found along both the Zambian and Tanzanian coastlines.

Adults display a muted olive-brown to grey-brown body colouration that some populations augment with faint iridescent sheen. While lacking the dramatic colour of T. moorii morphs, T. annectens is valued by serious hobbyists for its scientific interest and as a representative of a distinct evolutionary lineage within the genus.

Husbandry requirements are identical to other Tropheus: strict herbivore diet, alkaline hard water, colony management of 12 or more, and extensive rockwork. T. annectens tends to be slightly less intensely aggressive than T. moorii in well-managed colonies.

Water: 24–27°C, pH 7.8–9.0, GH 10–20, KH 8–18; tolerates slight temperature variation better than moorii. Tank: 300 L minimum; wave-action style strong circulation beneficial; dense rockwork essential. Feeding: Spirulina-based diet; shows good acceptance of nori and blanched vegetables; no protein foods. Breeding: Maternal mouthbrooder with smaller broods of 3–10 fry; fry rearing as per other Tropheus. Compatibility: Species-only or with robust Tanganyika species; compatible with some Petrochromis forms.