Scientific Name: Carassius auratus auratusCommon Name: Red and Black OrandaAdult Size: 7 inchLife Expectancy: 15 YearsHabitat: They inhabit the slow-moving and stagnant rivers and lakes in AsiaMinimum Tank Size: 10 GallonIdeal Tank Conditions:Temperature Range: 65-72°FpH Range: 6.0-8.0Hardness Range..