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between 5-10 gallons per inch of fish.

A single adult goldfish needs 20 gallons and another 10 gallons per addional goldfish (so two goldfish need about 30 gallons but something between 25-35 gals would be good). As babies they one can survive in a 10 or 15 gal but the tank should be upgraded as soon as possible.

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15y ago

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Will goldfish grow to the size of their tank?

No, goldfish will not grow to the size of their tank. They will continue to grow and may become stunted or unhealthy if kept in a tank that is too small for their size.


I have ten goldfish and two koi what size tank do I need?

50-100 gallons


How does the size of a tank affect the growth of goldfish?

The size of a tank can affect the growth of goldfish. A larger tank provides more space for the goldfish to swim and grow, allowing them to reach their full potential size. In a smaller tank, goldfish may be stunted in growth due to limited space and water quality issues.


If your goldfish is about 2 and a half inches long how big does its tank need to be?

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.


How does the size of a goldfish tank affect the growth of the goldfish?

The size of a goldfish tank can affect the growth of the goldfish. A larger tank provides more space for the goldfish to swim and grow, leading to healthier and potentially larger fish. In contrast, a smaller tank can restrict the fish's movement and growth, potentially stunting their development.


What are the recommended tank size requirements for keeping a goldfish in a 5-gallon tank?

A 5-gallon tank is not recommended for keeping a goldfish. Goldfish require a larger tank size to thrive, ideally 20 gallons or more for a single goldfish. A larger tank provides more space for the goldfish to swim and grow, as well as better water quality.


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.


Do goldfish grow?

Yes, they will grow almost to half the size of their tank.


How often shoul you clean a goldfish's tank with two goldfish?

every other week


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.


What are the ideal conditions for keeping two goldfish in a tank?

The ideal conditions for keeping two goldfish in a tank include a tank size of at least 20 gallons, a water temperature between 65-75F, a pH level of 7-8, and regular water changes to maintain water quality. It is important to provide a balanced diet, proper filtration, and adequate space for the goldfish to swim and explore.


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.