ryukin goldfish temperature

[Smungung]

What is the coldest a ryukin goldfish can get they cant stand water that's too cool right?

 

[brent245]

Down to 50 they might be ok for short periods. ideally 65-75

 

[Smungung]

so they're basically cool water to sub-tropical? what fancy goldfish would be good down to 40 degrees?

 

[monkeybike]

My parents have a black moor goldfish that survives a Central NY winter in a 10x20x4 outside pond