Fire Eel (Mastacembelus erythrotaenia)Fire Eels are stunning, elongated fish with striking red markings along their dark bodies. They are intelligent, can recognize their owners, and may even eat from your hand! Minimum Tank Requirements: Tank Size: 300 litres or more Temperature: 24 28C pH: 6. 5 7. 5 Tankmates: Best kept with peaceful, medium to large tank mates like larger tetras, rainbowfish, and cichlids. Avoid small fish that may be mistaken for food. Diet: Carnivorous. They prefer