together? Goldfish can't be raised with guppies. First of all, their habits are different, goldfish is a cold-water fish, like the water temperature is 18-26 C, guppy is a tropical fish, like the water temperature is 24-26 C. They have different requirements for water temperature, so they are not suitable for polyculture together. Secondly, their body size is different, goldfish is larger, adult body length can reach about 20-30 cm, guppy is smaller, adult body length can only be 4-6 cm. The size difference between the two is so great that if they are mixed together, the tail of guppies can easily be bitten by goldfish. Finally, their food is also different, although goldfish and guppy's feeding habits are more miscellaneous, but goldfish need to feed some red and green feed to ensure that the body color is bright, and if the guppy eats red and green feed for a long time, it will cause discomfort.
with koi? Goldfish can not be raised with koi, because the size of koi is large, and its body length can reach about 1-1.5 meters after adulthood. Goldfish are relatively small, with adult body length of about 20-30 cm. Even larger grass goldfish can only grow up to 30-40 cm. And the appetite of Koi is large, the ability to grab food is relatively strong, if mixed with goldfish, goldfish is likely to grab Koi. If they must be mixed, they can mix the smaller juvenile koi and goldfish.
