Dwarf cichlids

"Dwarf cichlid" is a hobby category rather than a taxonomic one: it gathers the cichlids that stay small enough — broadly under about 4 in — to keep and breed a pair or a harem in an ordinary aquarium. Almost all of them are fishes of soft, warm, slow water: the tannin-stained forest streams and flooded leaf litter of the Amazon and Orinoco, and the shaded brooks of West and Central Africa. That shared habitat is why the same handful of conditions — warmth in the mid-to-high 20s °C, low mineral content, and a gentle, acidic chemistry — recurs across genera that are otherwise only distantly related.

What they lack in size they make up for in behaviour. Most are cave or substrate spawners with elaborate pair bonds: in the American genera a single male typically holds a territory over several females (a harem), each female guarding her own clutch and brood of fry; in the West African genera a bonded pair usually defends the cave and young together. The colours that make them so collectable — the metallic blues of a ram, the cherry flank of a kribensis, the endless local forms of Apistogramma — are courtship and territorial signals first, ornaments second.

Because so many are tied to specific blackwater drainages, the dwarf cichlids are where the atlas's water-first approach pays off: the fish make far more sense read against the river they came from than as a row of care sheets. Each species below links to its own profile, distribution map and water tolerances.