Paracyprichromis Nigripinnis

Paracyprichromis nigripinnis comes from the rocky, open-water zones of Lake Tanganyika in East Africa, where it drifts in large mid-water schools along sheer cliff faces. It's a slender, torpedo-shaped cichlid that barely looks like a cichlid at all, and that's part of its charm. Under good lighting, iridescent blue-green stripes run the length of the body and practically glow against the fish's dark flanks.

This is one of the very few cichlids that genuinely shoals rather than just tolerates conspecifics. A group of twelve or more moving together in open water is genuinely something to watch.

They need hard, alkaline water to thrive, with pH consistently above 7.8 and good mineral content. Temperatures in the mid-20s Celsius suit them well. The lake itself is famously stable, so dramatic swings in chemistry are more dangerous here than with many other species.

Feeding is straightforward. They're micropredators in the wild, picking off tiny invertebrates and zooplankton, so small meaty foods are the way to go. High-quality flake, frozen cyclops, baby brine shrimp, and daphnia all work well. Avoid large pellets and don't rely on purely vegetable-based foods long term.

Behaviorally, they're among the more relaxed Tanganyikan cichlids, though males do display to each other with spread fins and parallel swimming. It rarely escalates to injury, especially in a spacious tank with a decent group. They reward patient aquarists who set up a proper Tanganyika biotope and let the school settle in. If you want to see how other hobbyists have set up tanks for these fish, browse the real community builds on Shimmerscape to get a feel for what works.