Campylomormyrus Cassaicus

Campylomormyrus cassaicus is a visually dramatic Mormyrid from the Kasai River system of the Congo basin, recognisable by its disproportionately long, curved, downturned snout that is used to probe substrate and crevices for invertebrate prey. The body is marked with bold alternating dark and pale bands that give it a striking appearance unique among freshwater aquarium fish.

This large species requires a spacious aquarium with excellent water quality, dim lighting, and a soft sand substrate. Its elongated snout makes fine sand essential — coarse substrate damages the delicate sensory structures. Caves, driftwood, and PVC pipe shelters are required for security. Like all Mormyrids, it is predominantly nocturnal.

Campylomormyrus cassaicus is intolerant of conspecifics and most other Mormyrids due to electric field interference. It coexists peacefully with non-electric tankmates of similar size. A diet of frozen bloodworm, earthworm, and other meaty items should be offered in the evening after lights dim.

Water: Soft to moderately hard, pH 6.0–7.5, temperature 22–28°C, GH 2–12, KH 1–6. Tank: Minimum 350 L, fine sand substrate, dim lighting, multiple cave structures and wood for shelter. Feeding: Carnivore; frozen bloodworm, earthworm chunks, tubifex, and sinking carnivore pellets. Breeding: Not documented in home aquaria; electric field interference makes group housing very difficult. Compatibility: Keep alone or with large, peaceful non-Mormyrid African species; solitary by nature.