One or two would be just fine, provided you have a few females
They could well be spawning at this time of year.
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.
Goldfish are very aggressive consumers and have extremely short term memories and so could not be a very effective "comrade".
Only if the "feeder Goldfish" - which is usually just a mutt bred Common/Comet Goldfish, is very small and the Telescope is an adult. If it fits in their mouth, that's where it will end up! However, "feeder" Goldfish have the potential to get over 10"-12" excluding tail fin, and a large one of these could very easily fatally injure a more fragile fancy Telescope Goldfish. The two varieties should never be mixed.
Periadioc Comet
could be many? does it have "whiskers"?>A koi Does it have a tail fin that seems small for it's body?>Strong possibility it is a comet Does it have a normal sized tail fin?>Maybe a common goldfish Does it have a split "upside down v" tail?>It is a fancy variety
Unlike humans, telling the gender of a goldfish actually takes some knowledge. Do not pay attention to the color or the fins. Female goldfishes are actually bigger than the males (especially with their eggs). Males have mid-line ridges on their undersides. With all these in mind, the easiest way to tell is by their spawning time. The female opening will be bigger and heavier.
could you put comet in your dogs bath water
No
Go to the plaza then go to the goldfish zone then there is four places you could go through in the goldfish zone
No. Goldfish cannot live in a five gallon tank at all, they are very messy and potentially large fish that require an absolute minimum of 20 gallons. For a 5 gallon coldwater tank, paradise fish or white cloud mountain minnows would be attractive choices. For a tropical tank there are a lot of small species suitable for a nano tank, and you could consider the ever-popular betta, or some tetras or dwarf rainbowfish.
== yes.