Ideal water perimeters for Siamese Fighting Fish: 74 - 84 Degrees F. PH of 7.0
Ideal water perimeters for Goldfish: 58 - 72 Degrees F. PH of 7.0
My tank: 75 - 77 Degrees F (78 Degrees in the winter- heater)
3 - 5 Degrees F. for a Goldfish is not extreame (6 degrees F. in the winter)
hey, uhm are you planning on getting the goldfish in another container? Goldfish are coldwater fish, bettas are warmwater... In order to keep a goldfish you need cooler than 78 degree water... plus they have totally different diet needs.