It depends on how big your tank is.
The bigger the fishtank, the bigger the fish will grow.
Not only does it matter how big your tank/pond is but it also depends greatly on what the fish is fed, the variety of the fish, and the fishes genetics. Many goldfish can grow over a foot long- here is a list of standard sizes to expect a goldfish to grow:
pond goldfish like comets, shubunkins, and wakins can grow well over 12inches
fancier varieties like ranchus,lionhead,and orandas can grow over 10 inches
other fancy varieties like ryukins,black moors, fantails, etc. can grow over 6-7 inches
The largest goldfish recorded is over 16 inches
By feeding your goldfish a varied diet, giving them plenty of room to grow, and by buying goldfish from only a healthy stock you can ensure that your goldfish will grow to a healthy and favorable size.
Goldfish may grow to a maximum length of 23 inches (59 cm) and a maximum weight of 9.9 pounds (4.5 kg), although this is rare; most individual goldfish grow to under half this size. In optimal conditions, goldfish may live more than 40 years[2]; however, most household goldfish generally only live six to eight years.
Common Goldfish can reach a size over a foot, depending on the size of the aquarium.
It depends on the age and breed. The longer breeds that we most associate with ponds (Koi, for instance) might grow to be longer than a foot. Fancy, round-bodied breeds can grow to 8 or 9 inches. Fish are indeterminate growers, meaning they never stop growing for their entire life.
Goldfish grow based on the available room and the food supply though the biggest one I ever had maxed out at about ten inches from nose to tail. They can grow considerably larger than 10 inches even double that. Goldfish do not magically limit the size to which they grow. People who think that are ignorant of the facts. Goldfish are like most other creatures in that, if they are treated badly by being kept in cramped quarters (lack of exercise) have a lack of water changes and are fed insufficient food they will be runted by their bad living conditions and not reach a good mature size.
This all depends on what type of goldfish you have and how big your tank is that your holding the fish in. I have seen goldfish grow up to one foot and look like a trout. But that was all because it was in a pond and the owner took care of it.
it can become as big as this,( ),in a large aquarium,and much larger in a pond.
its not that big its actually like the head of push pin
The water should be at room temperature.
Well the best thing to do first, when they have outgrown their little tanks, you should get those big tanks with filters. You should get a big one because it would give your goldfish a lot more room to swim.
For twenty small (1-1.5 inch) Goldfish you should have something like a 30 gallon aquarium.
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.
trout pellets, they make the goldfish grow larger, faster, just a couple a day
No it will not. It will be runted by the lack of room. In order for goldfish to grow to full size they should be housed in ponds or very large aquaria.
Goldfish do not get pregnant. They are egg layers.
no
who cares? I think they will eat them because i once had two little guppies and the next morning they were gone. Answer- Yes, they will eat them. If they don't the guppies will die, because the stuff on the goldfish is like a poison for other fish. You should only put goldfish with goldfish.
contrary to popular belief, most goldfish do not have a stomach!
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.
Small or Big it should be kept in a huge tank with Filter and Oxygen 10 gallons per Goldfish At least