One fancy goldfish (not a single-tail) needs at least 75 litres by itself; for two you would need no smaller than a 115 litre tank.
It's not only the fact that they grow quite large, but also because they produce much more waste than most other fish.
No. A 10 gallon tank is barely big enough to keep a single goldfish in.
Yes, the bigger tank the better. They actually HATE goldfish bowls. (they're not nearly big enough). Goldfish usually need a 20 to 30 gallon tank
yes
Yes, as long as your tank is big enough for 3 goldfish. It should be at least 35 to 40 gallons in size even when your goldfish are babies.
Comet goldfish grow to be around a foot long. 120 liters is about 30 gallons so I say about 2. Get fancy goldfish because you could do even five in a tank that size because they don't get as big.
Yes they can . Don't listen to any one They will be wrong!
it depends on how big it is if it is a goldfish or beta it can be in a bowl.If it is one of those big tiger fish or aqarium fish then put it in a big tank. A fish will grow to the size of the tank or bowl. For instance, say a goldfish is in a tank, it will not grow as big as the tank; however it will grow big enough to be able to swim in their environment. The fish will not overgrow the tank. I had a six inch goldfish in a thirty gallon tank.
I have a 10gallon with a common and a shubunkin goldfish. They are both around 2.5 inches. I am soon upgrading to a 30 gallon so there will be enough room when they get bigger.
Goldfish commonly grow to over 12 inches. The size of your tank would indicate that it is not really large enough for keeping goldfish in. The basic rule of fishkeeping is "1 Inch of fish needs a minimum of 1 gallon of water. Goldfish should really be kept in a pond.
Not really big but at least 30cms
Yes, but only just. Please make sure the tank is properly filtered and has a regular weekly part water change.
Regardless of the type or size of goldfish the minimum acceptable size of an aquarium for a goldfish is 30 gallons. Buy a tank that is at least 30 gallons if you plan to have goldfish. You can comfortably fit 3 goldfish in a tank this size but no goldfish in a tank any smaller. Goldfish are essentially pond fish and need lots of space to swim; they will not thrive in a small aquarium.