Thin Bar Gold Siamese Tiger FishOrigin: These species are native to the Mekong basin in Northeastern Thailand, Laos, and parts of Cambodia. They can be found in dimly lit ecosystems with fine gravel or sandy substrate, some driftwood and bogwood roots and plenty of open swimming spaces. Tank Size: 300 Gallon+ Swim Region: All over Temperament: Aggressive Size: 1. 5 feet (Males Females) Temperature: 72 80 F Water PH: 6. 5 7. 5 Water Hardness: 5 15 dGH 89 267 ppm