American Flag Fish Alternative Name(s): Florida Flagfish Scientific Name(s): Jordanella floridae Category: Coldwater Difficulty: Maximum Size: 6cms Minimum Tank Volume: 60 litres Minimum Tank Size: 24" x 12" x 12" Water Temperature Range: 18-24°C Water pH Range: 6.0-8.0 Water Hardness Range: 5-20 dGH