What should the dimensions of a fish tank be tht hold five common goldfish?

Answer 1

First to determine stocking level:
To determine stocking levels you should figure that you need 12 inches of surface area for each one inch of fish (figure the size they will grow to be as adults). So let's say your goldfish are going to be a max of 3 inches ( I am guessing they are the kind that you win at the carnivals - PLEASE NOTE - I am not referring to the fancy kind that grows really large , please post again if this is the case and I WILL HELP YOU RECALCULATE). I am also guessing a bit large because they produce a lot of waste and ammonia.

5 x 3 inches (# fish x # inches) = 15 (total # inches of fish)
15 x 12 (surface area needed per inch) = 180 inches

So if you multiply the length times width of a tank and it is close to 180 you will be okay. Most 10 gallon leader tanks are about 20 by 10 and they will be okay... Most hex tanks that come in 10 and 15 gallon would also be okay. Just remember that small tanks usually mean more maintainence.

Second:
Assume that 1 gallon of water per 1 inch adult fish is adequate- so as per the previous calculation -15 inches of fish = 15 gallon aquarium. This calulation just doesn't take into account aquariums that are of unusual shape.

Also, lots of people may tell you go get a 5 gallon bowl and toss them in. I really don't like this as it requires daily water chages and you will learn to hate the hobby of fishkeeping (not to mention, life has got to be miserable for the fish). Many also say that goldfish do not necessarily require all of the filters and such that most tropical fish need, but again... how much work so you want to do? Also know that you should never mix other tropical fish with goldfish because they produce so much ammonia that your other fish will not thrive. Good luck!

Answer 2

You don't say how big the fish are. The answer about surface area comes closest to figuring out the size you will need. The correct formula is to take the length x width and divide that by 12 to get the number of "inches" of fish you can keep in the tank. A 20L is 30" x 12", so you could keep 30" of fish in it. If your fish are each 2" (10" total), that's more than enough room right now, but if they're 6" you're at the max already. A 30 gallon is 36 x 13 and a 55 gallon is 48 x 13. You can do the math.

Be aware that common goldfish (comets) can grow to be almost 2 feet long and can live 20+ years. They will eventually need an outdoor pond.

Answer 3

until the goldfish are around 5years old, you could go with a 50 gallon tank (10 gallons per fish). after that, they will be pretty big, and you'll want to at least go to a 70 if not a 100 gallon tank. Goldfish can live up to 20 years if taken care of properly.

I have a 6 1/2 year old veiltail fancy goldfish alone in a 10 gallon tank,and he's already 8 1/2 " long. we're shopping for another tank as we speak.

good luck!!!

Answer 4

The largest tank all-glass makes is 210 gallons, its 72x24x29
Oceanic makes a 215 gallon, 72.5x24.5x39
I dont know the largest perfecto makes but either way its 50 gallons PER fish when they are adult size wich is 12-14 inches. While they are baby to juveniles its 20 gallons PER goldfish. SO right now they should be in no less then a 100 gallon tank. 48.5x18.5x29

Answer 5

it all depends on the size of the fish. they need about 1 gallon per inch of fish. so if you have five fish and they are 2 in a piece then you would need a 10 gallon tank. fish will grow to the size of the tank. most goldfish grow to be pretty big, but like i said it depends on the goldfish and how big you want them to get. if you get a big tank like a 20 or 30 gal they will have plenty of room to grow and swim, but will not be able to add any fish to them unless u get a larger one like a 30 + gal tank.

Answer 6

I know that you will need at least 50 gallons because get to be 14 inches the longest Ive ever heard of was 2 feet! but it had a hole tank to itself you wouldn't believe how many gallons there was there was 60 gallons! it had no other fish in the tank with it it is 17 years old!

Answer 7

i would go with a 20-30 gallon tank with really good filtration. goldfish are fine sharing space but are very dirty -- so you need something that will mostly keep up with the poop. you can grow lots of java fern and anubias family plants. goldfish won't eat them and they keep the poop levels down.

Answer 8

Depends on the size of your goldfish! If they're the small ones sold in pet stores, a five gallon should do.
But... you're probably going to want to get a couple more fish (it happened to me!). Get a 10-gallon aquarium, with an undergravel filter.

Answer 9

''3. They grow very fast and goldfish need at least 10 gals of water per fish.(goldfish grow to 6")!''

- http://www.kokosgoldfish.com/care.html

Hope that answers your question.
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Answer 10

I'd say a 30 gallon tank will fit your needs. I'm not a pro on this, but I'm pretty sure my advice is good.