Two Spot Bristletooth Tang (Ctenochaetus binotatus)Quick Stats Care Level: Moderate Temperament: Semi aggressive Color Form: Blue, Tan Diet: Herbivore Reef Compatible: Yes Water Conditions: sg 1. 020 1. 025, 72 78 F, dKH 8 12, pH 8. 1 8. 4 Max. Size: 8" Origin: Africa, Fiji, Indonesia, New Caledonia, Sumatra Family: Acanthuridae Minimum Tank Size: 70 gallons Approximate Purchase Size: Small; 1" to 2 3 4"; Small Medium: 2 3 4" to 3 1 4"; Medium; 3" to 4"; Medium Large: 4" to 5"; Large; 5" to 6";