Comet goldfish need at least 30 gallons each because of the type of fish they are (single tail), the fact that they can grow extremely long, and they produce a lot of waste.
A fancy goldfish (fatter with more tails) need 20 gallons for just one fish, so either way, your 1 gallon tank cannot hold any goldfish at all.
yes
Absolutely not! Unless the goldfish is half an inch and going to stay that way you are seriously hurting your fish! A comet goldfish will get very big! you need at least a 55 gallon tank for that sucker! Try raising a smaller regular goldfish in a 20 gallon tank. You'd be far better off!
One goldfish needs a 30-gallon tank, and an additional ten-gallons per additional goldfish. Goldfish can grow to be 10-12-inches long.
Probably, but usually the comet goldfish will get all the food and/or the other goldfish will become miserable. This has happened to me before and I do not recommend putting them in the same tanks. Try putting the fancy and comet godlfish seperate!
I have 2 myself. I've had them for about 1 year. I expect them to live maybe around 8-11 years. Or less if you don't take care of them enough.
The "Comet" is a variety of Goldfish that has a long, single tail.
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.
a goldfish,sparkling
no. i have had two big comet goldfish with my, little 2 inch fish, and they never ate him.
Comet goldfish are the average pet, although you can now get funnier types such as (my favourite) Celestial goldfish.
If by "comet fish" you mean a comet goldfish, you should not put anything in with it unless you get a much larger tank. A comet goldfish can grow six inches or longer, and will need a larger tank. Any tankmates should be cold water fish, like the goldfish. Snails will also get along well with the fish, but might get eaten. If it is a marine comet fish, it will grow up to seven inches, and will also need a larger tank.
Because a comet is a single tailed goldfish, and can grow very long, it will need at least 30 gallons on it's own