Yes they can, I have a guppy (amongst other fish) with 4 goldfish together and they are very happily living together :)
no
yes my goldfish and guppies go fine together
yes
The best and only good tank mate for fancy goldfish, are other fancy goldfish.
some goldfish, mollies, and guppies
3:5Guppies:Total Fish
The goldfish should never be in the same tank as guppies. Goldfish are coldwater fish and need to be kept below 70F. Guppies are tropical fish and need to be kept above 70F.
Global warming
Goldfishes and guppies should be kept in a different tank....
They should never be in the same tank because Guppies are tropical fish and like to be kept over 70F and Goldfish are coldwater fish and like to be kept below 70F. So Goldfish should not bite guppies because they should never be in the same tank together...
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