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Old 04-05-2012, 10:31 PM   #1 
Turquioce
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7 goldfish? help?

OK, So me and some friends went a little overbored at the carnival today and i somehow ended up with 7 goldfish because of my fantastic aim with ping pong balls. Anyway, they are all pretty small exept for one. I have them all in a 2.5 gal for now. Can they live happily in a betta sorority tank? Just wondering, because i really dont want to get a whole new tank if i dont have to, provided they ALL survive. I ve never had much luck with carnival goldfish.
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Old 04-05-2012, 10:37 PM   #2 
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No. Ideally in this situation you would need a heavily filtered 400 gallon minimum. To properly fit the group as all of the fish that you have aqueried have a very high bio load, and a very large potential maximum size. Leasing them best suiting more so of a pond for that number than any home aquarium

Reason 1
There are also many potential problems to think about when consodering compatibility issues,

Reason 2
common goldfish prefer cold temperatures, making them cold water fish, while bettas prefer warmer temperatures of around 78. Which makes them tropical fish

Reason 3
Goldfish, and bettas have very widely different diets such as goldfish being mainly omnivorous. But mainly prefer planted base foods, in my experience, while bettas a mainly carnivorous. They ideally should be fed in different tanks away from eachother

Reason 4
Common goldfish get to a maximum size of around 16 inches, while bettas stay at a measly 3 inches. The goldfish's re very likely to cause problems, and eat the bettas

Reason 5
Goldfish have relatively long fins and bettas are known to nip at them along with attacking the goldfish itself

Last edited by Mo; 04-05-2012 at 10:50 PM.
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Old 04-05-2012, 10:37 PM   #3 
Mankey
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As far as I know, goldfish actually need to be in minimum 55 gallon tanks.

Another important thing is that Betta are tropical fish, meaning they need warmer water, while Goldfish are cold water fish. That difference in preference should show that they are definitely not good tankmates.
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Old 04-05-2012, 10:38 PM   #4 
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goldfish need HUGE tanks. those are probably commons, and really need a pond to be happiest, unless you have a few HUNDRED gallon tank sitting about. :I

they also can't live in water as warm as bettas need. they're coldwater fish and need cooler water.

they're also VERY messy fish. they have no stomachs, so what you feed them literally goes right through them, and they produce ALOT of ammonia from that, and just from breathing. the filter you'd need for SEVEN goldfish would make your bettas VERY unhappy fish.

if you can't house them, take them to a pet store, or find someone with an outdoor pond who can.
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Old 04-05-2012, 10:56 PM   #5 
Turquioce
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I do plan on getting a very large tank. At least as large as I can afford. I hope I can keep them provided they live. Im not so sure if they'll survive yet sence I got them from the carnival and they dont treat the fish very well. About how Quickly do they grow? And I am aware of the large amount of cleaning ill have to do. And also, i did know someone who kept about 15 goldfish in a 55 gallon tank. Im not sure if that is the best idea but they seemed pretty happy.
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Old 04-05-2012, 11:00 PM   #6 
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They grow about an inch a month given the space too, so ideally you would want about a 30-50 gallon upgrade every two months in the early juvenile stages. Right now you are looking at a minimum of a 300-400 gallon tank long term
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Old 04-05-2012, 11:05 PM   #7 
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fancies are the ones that need small tanks. it's 20 gallons for one, 10 additional gallons per extra goldfish. in a 55, that'd be.... 4 goldfish max. :I i don't know how in the world they managed to make 15 goldfish live in such a 'small' tank, but it sounds like an unhappy situation.
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Old 04-05-2012, 11:09 PM   #8 
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I would just see if you could donate them to a nearby fish or pet store. Honestly, common goldfish, particularly seven of them really need a pond. Otherwise, you would be looking at a minimum of 100-200 gallons to comfortably house them all.

It can take as little as a year or two for a goldfish to reach over 12 inches long if the correct care is provided from day one. They tend to grow much more slowly in aquariums due to issues with stunting and nutrition.

Goldfish always look happy. Mine used to look happy when it was housed in a overstocked 15 gallon tank with five others. Now he has a bigger tank, better diet and several water changes a week, he has grown to seven inches, and occasionally tries to spawn with my other goldfish.

A goldfish is a much bigger committment than a dog or cat. They can live upwards of 20-30 years and really need specialised care if they are going to reach their full potential.

Unless you have a mature tank set-up for them already cycling is going to be a painful process involving lots and lots of water changes. Goldfish cannot be compared to bettas in the amount of waste they produce, and even if you use seeded media, it is going to require several weeks of water changes before you have enough beneficial bacteria to cope.
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Old 04-05-2012, 11:19 PM   #9 
Turquioce
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thanks for the information. I hope to keep one or two. But i think Ill try and find good homes for them.
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Old 04-05-2012, 11:43 PM   #10 
Sena Hansler
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Quote:
Originally Posted by Turquioce View Post
OK, So me and some friends went a little overbored at the carnival today and i somehow ended up with 7 goldfish because of my fantastic aim with ping pong balls. Anyway, they are all pretty small exept for one. I have them all in a 2.5 gal for now. Can they live happily in a betta sorority tank? Just wondering, because i really dont want to get a whole new tank if i dont have to, provided they ALL survive. I ve never had much luck with carnival goldfish.
Sorry...you may need to downsize your carni goldies let alone the fact 7 are in a 2.5 gallon tank...which right now I will warn they are at a high danger of death from ammonia poisoning because of being messy.

One goldie may need between 20 and 40 gallons, and add 10 gallons to each goldie afterwards for the minimal tank size needed.... let's say 40, plus 60. You're looking over 100 gallons, MINIMUM with double filtration.

I never recommend goldies and bettas together anyways, because goldies get big, have different needs, and are cold water fish unlike our lovely tropical bettas. Carni goldies never last because they are basically bottom of the scum-tank mill goldies, from wholesalers.
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