Congo Puffer tank mates
Tetraodon miurus
4 rated pairings from the Congo Puffer care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Congo Puffer needs at least 30 gallons on its own; every companion adds to that.
Use caution
4 · Works in the right setup; read the note before combining.Striped Raphael Catfish
Platydoras armatulus
50 gal min · 9" adult · Peaceful
Similar size and bottom-dwelling habits; may coexist if tank is large enough, but predation risk remains high
Upside-Down Catfish
Synodontis nigriventris
20 gal min · 4" adult · Peaceful
Nocturnal bottom-dweller with similar size; territorial conflicts likely but may tolerate each other in spacious tanks
Fire Eel
Mastacembelus erythrotaenia
80 gal min · 36" adult · Semi-aggressive
Large, predatory, and similarly aggressive; only viable with substantial tank space and careful monitoring
Rope Fish
Erpetoichthys calabaricus
55 gal min · 15" adult · Peaceful
Bottom-dwelling predator of similar temperament; cohabitation possible only in very large, well-structured tanks
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.