Tropheus polli

Tropheus polli is unique in the genus for the deeply forked, lyre shape of its tail fin with two pointed tips; the tails of other Tropheus species are straight or slightly concave. The body is in dark blue-black tones; in some individuals and populations a lighter band is seen in the middle of the body. It lives only in a limited area in the central part of the Tanzanian coast. Its care is the same as for other Tropheus, and it is sensitive to the same mistakes.

• At least 300 liters and 150 cm of length for a group of 12–15.
• Plenty of rock piles that break lines of sight; high oxygen and a strong filter.
• pH 8–9, hard and stable water; a 30% water change every week, low nitrate.
• One species and one local form; no other Tropheus are added.

Herbivorous. Low-protein flakes or granules based mainly on spirulina are given in small amounts 2–3 times a day. Carnivorous foods and bloodworms cause bloat.

There is a constant struggle for rank within the group; a large group spreads out the aggression. The long tail tips can get frayed in quarrelsome tanks. The female is a mouthbrooder and produces a small number of fry.

Good companions: Cyprichromis, Paracyprichromis, Synodontis catfish.

Avoid: other Tropheus species, Malawi mbuna, carnivorous species, shrimp and plants.