Can you keep Sarasa Goldfish with Koi?
Yes, you can quite happily keep Sarasa comet goldfish with Koi, as well as other coldwater species such as goldfish and sturgeon. You can also keep with fancy goldfish indoors, although they may out-compete slower swimming species for food.
How big do Sarasa Comet Goldfish get? Sarasa comet goldfish can grow to exceed 12 inches or 30cm as adults.