Nannocharax Occidentalis

Nannocharax occidentalis is one of the least frequently encountered members of the genus in the aquarium trade, originating from the forest streams and slow rivers of West Africa. Its pale body is marked with a series of dark spots and blotches that provide superb camouflage against sandy or leaf-littered substrates. Its secretive nature means it spends most of its time sheltering under leaves or among vegetation near the bottom.

Keeping this species successfully requires recreating a naturalistic blackwater or tannin-stained environment with very soft, acidic water, a fine sand substrate, and abundant leaf litter or moss. Good filtration is essential but flow should be minimal. This is a fish for patient aquarists who enjoy observing subtle, natural behaviours.

Nannocharax occidentalis should be fed small live and frozen invertebrates, with particular success using micro-worm, daphnia, and small bloodworm. Dry foods are accepted but live or frozen items elicit the most natural foraging behaviour.

Water: Soft and acidic, pH 5.5–7.0, temperature 22–26°C, GH 0–6, KH 0–3. Tank: Minimum 50 L with fine sand, leaf litter, moss, and very gentle flow. Feeding: Omnivore; micro-worm, daphnia, bloodworm, and quality sinking micro-pellets. Breeding: Poorly documented; presumed egg scatterer on substrate in very soft acidic conditions. Compatibility: Peaceful; best in a species or biotope tank with small, gentle West African fish.