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How big do goldfish get in a thirty gallon fish tank?

Updated: 8/20/2019
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10y ago

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Goldfish grow extremely large; fancies will become fatter, and singletails grow quite long.

You should only have 2 fancies in a 30 gallon, or one singletail for proper health and growth.

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10y ago
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Q: How big do goldfish get in a thirty gallon fish tank?
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Should you put your fish in a bowl or tank?

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.


Can 4 goldfish live in 5 gallons of water?

no they need at least five gallons each. a thirty gallon tank is a good size tank to keep goldfish in.


Can an oranda goldfish live in same tank with regular goldfish?

Yes, but your tank size needs to support it. If you mean that a regular goldfish is a long single-tail goldfish, then you need at least a 40 gallon tank just for the 2 fish due to the size potential of the common goldfish. If you mean a regular goldfish as in a round bodied fantail, or perhaps a ryukin, then you need at least a 30 gallon tank for the 2 fish.


Is a 30 gallon tank for 2 goldfish ok one of them is a fancy goldfish?

no goldfish and tropical fish cannot live together. gold fish are cold water fish and tropical fish are tropical fish. also only 2 goldfish can go in a 30 gallon, because goldfish make a lot of waste.


What kind of fish can you put in your half gallon tank?

That is small better stick with a goldfish.


How many goldfish for a 30 gallon tank?

It can't be done. Goldies get huge unless they are the facy kind. Try a pond or get five in a thirty gallon.


How many bubble eye goldfish can you have in a 1 gallon tank?

ZERO!! A 1 gallon tank is not large enough to keep any kind of fish in. A Bubble eye goldfish can grow to 10 inches long and so, using the basic rule for keeping fish. "1 inch of fish need a minimum of 1 gallon of water" you would need at least a 12 gallon tank to house 1 Bubble eyed goldfish.


How does a goldfish grow as a size of a foot when in seawater and still the same size when in a bowl?

Goldfish release growth-inhibiting hormones into the water they live in: the more goldfish in a smaller space, the less likely they are to grow. For instance, if I have a common goldfish in a 5 gallon tank, it will grow to about the same size if I had 6 of the same fish in a 30 gallon tank. But leave that fish alone in a 30 gallon tank, and it will grow larger. This is why pond goldfish grow bigger. But goldfish won't grow at all in seawater; they aren't saltwater fish.


How many gallon fish tank should you get for 6 fish?

The rule of thumb is usually a gallon per fish, so six gallons would be good. If the fish are on the large side (like a goldfish), then a seven gallon tank would be ideal.


Can you use a thirty gallon filter on a twenty gallon fish tank?

yes you can it will be fine. i have experience :) haha


What goldfish can you put in a 2 gallon tank-freshwater and not to difficult to keep?

you would have to get a 10 gallon tank for 1 goldfish! you would need a 20 gallon tank for 2 goldfish. Also goldfish don't go well together there just being stored at the store they take the fish out right when they start to be aggressive. sorry bout your 2 gallon tank!!


Can a comet goldfish fit in a 1.5 gallon tank?

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!