Cheese Specialist
Newbie
Not a good idea, although fancy goldfish can do well in warmer water.
Your tank would have to be pretty big to keep 3 goldfish and tropicals. Reading back, I see that it is 60 litres. That's not even big enough for one goldie, I a afraid as they are very large and messy fish. 1 needs 20gallons and then 10 gallons for each after that.
Perhaps set up a small tropical tank too, then you can have a bit of both. Tropicals require less water volume each than goldfish so you could have a 10-20 gallon small community happily.

Your tank would have to be pretty big to keep 3 goldfish and tropicals. Reading back, I see that it is 60 litres. That's not even big enough for one goldie, I a afraid as they are very large and messy fish. 1 needs 20gallons and then 10 gallons for each after that.
Perhaps set up a small tropical tank too, then you can have a bit of both. Tropicals require less water volume each than goldfish so you could have a 10-20 gallon small community happily.