Serpae Tetra Alternative Name(s): Scientific Name(s): Hyphessobrycon eques Category: Tropical Difficulty: Maximum Size: 4cms Minimum Tank Volume: 85 litres Minimum Tank Size: 30" x 15" x 12" Water Temperature Range: 23-28°C Water pH Range: 5.5-7.5 Water Hardness Range: 5-20 dGH