Birman Kitty wrote:~(Summer)~ wrote:Goldfish are not at all suitable as a companion for bettas, nor should they be kept in 10 gallon tanks :c Bettas need warm water to thrive while goldfish need cooler water.
Goldfish also get massive and need a much bigger tank than 10 gallons. The absolute minimum for one alone is 20 gallons and even that is on the small side.
I have a small goldfish in my ten gallon with my male betta. They get along great!
Another thing? Goldfish shouldn't be kept without other goldfish - they are extremely social creatures who easily get lonely, meaning, when you separate them you will have to have at least a 40 gallon tank and you need to purchase another - of the same species, generally. And another thing, a goldfishes bioload is so massive that a 10 gallon will become completely toxic to them and deadly to them and everything else in the tank within just 8 hours or so.
Not only that but they have different water needs, a goldfish is a coldwater fish and a betta a tropical. Betta prefer 76-84 degrees, generally 78 degrees and goldfish need anywhere from 58-72 degrees. Keeping a betta in colder water to satisfy the goldfish can cause the betta to become lethargic, emaciated, cold and cause organ failure and ultimately death. Keeping goldfish in hotter water to appease the betta will cause the goldfish to become oxygen deprived, lethargic, nerve damage and organ failure - and again, ultimately death.
Goldfish also prefer neutral pH and betta prefer soft pH, and while betta can withstand the pH being a little harder it overall stunts the betta, shortens its lifespan and dramatically lowers the quality of life for the betta to be forced on the edges of it's requirements to appease an unnatural and unnecessary pair.
He was just put in there for the winter, he lives in my pond out back...
I have also have had many goldfish for over 10 years, all of the same breeding. I have around 20 living out there at the moment. I have never added any, and they thrive. I know the needs of both bettas and goldfish. I know exactly how large a goldfish can get, I have many very large ones, this goldfish was quiet smaller, and was too young to thrive in the winter (I have very very cold winters) I have lost a few already this winter, and wanted to keep this one safe in my indoor tanks. My betta has had goldfish companions in the past, and a ten gallon tank is fine, and quite large enough for one season.
And after all, its only a goldfish.
I hate commenting in here, I totally forgot how ridiculous some people here are. Sorry if I offended you because of how I keep my fish, but I think if I can keep a school (I dont care what its actually called) of healthy goldfish for over ten years, my fish are fine and happy.