Schouteden's Puffer

Tetraodon schoutedeni is an endemic of the Congo River rapids system, making it one of the most geographically restricted freshwater puffers in the world. Its dark brown-to-black body is overlaid with a fine cream-reticulated network that intensifies with age and condition. Like most Congo puffers it is a benthic ambush predator, spending much of its time motionless on the substrate. Water quality must be impeccable, with high oxygenation and a gentle flow replicating its rapids habitat. A sandy substrate with smooth stones provides both cover and sensory stimulation. It must be kept alone or with very robust, fast-moving dither fish that remain out of biting range. A varied diet of hard-shelled invertebrates is essential for beak wear management.

Water: Soft to moderately hard, pH 6.5–7.5, temperature 24–27°C, high dissolved oxygen and gentle current. Tank: 120 L minimum; sandy substrate, smooth rocks, dim lighting; strong filtration with frequent water changes. Feeding: Live or frozen snails, mussels, clams, earthworms; hard-shelled food required weekly to keep beak trimmed. Breeding: Rarely achieved in captivity; no reliable protocol; hypothesised substrate spawner based on Congo Puffer analogy. Compatibility: Solitary only; will bite tankmates; any cohabitation attempted only in very large tanks with robust fast fish.