Goldfish Inquirey - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 06-08-2012, 07:50 AM Thread Starter
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FluffyWolf2's Avatar
Goldfish Inquirey

I've spotted a goldfish rescue on my local craigslist, and was wanting some advice of things to care for if the person works with me (another person is interested).

Currently their tank is a 10G set up with a goldfish, and is apparently very dirty. So I would plan to clean, make sure the filter is working, establish a base temperature that would be consistent, and so on. I'd also like to get the fish a few buddies and wanted recommendations.

In the long haul, though I do not know the species of goldfish, what am I looking at in terms of needing to find or get it a new and bigger home? I have plans to get a 20G-L at some point, but that may still be a few months off. I know goldfish and their waste usually is the biggest concern, so any info and advice to help in this situation would be appreciated.


10 Gallon Tank - Starting Small! Planning to upgrade when I move out of my apartment!
1 - Black Lyretail Molly (F)
1 - Dalmatian Lyretail Mollly (M)
1 - Gold Dust Molly (F)
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post #2 of 4 Old 06-08-2012, 09:15 AM
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20g is the absolute minimum a single goldfish should be kept in, you should always plan on "the now" not the future, many reasons can come up that a bigger tank will not happen.

If you really want to get it then, daily checking of the water with a good liquid test kit such as API Master will need to be done, this will give you a clear picture of what is going on in the tank.

Filtration will be a bit of an issue as a 10g filter is not nearly enough for messy goldfish,
Temperature if you know exactly what goldfish it is, depending on type this can range from cold to tropical at 45 - 78F
Feeding would need to be kept to a minimum and regular vacuums of the tank would be needed to remove poop and other uneaten food waste.

At least one or more big water changes a week as well, this will be indicated by the level of Nitrates in the tank and whether or not any Ammonia or Nitrite are present. Daily if you notice any Ammonia or Nitrite.

In that size tank, I simply would not add anything else, the bioload from the goldfish alone is immense and anything else will likely make keeping the water parameters good very hard. Perhaps look at getting a 40g breeder tank off craiglist or look in local classified ads of papers. There is not a lot of difference in terms of the costs of going from a 20L to a 40g Breeder. HOWEVER, the benefit for the fish makes it well worth it.

If you look around, then there are deals on used tanks to be had, if money is an issue then secondhand provided the equipment is fully functional is one way to proceed.

10g Fry / Hospital / QT tank (as needed)

75g Saltwater Reef, Ocellaris Clownfish, Lyretail Antias (baby), Lemon damsel, Longtail Fairy Wrasse, purple dottyback, snails, crabs and a few LPS corals.

220g Still sitting empty (come on Lottery I need the numbers to come up!)
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post #3 of 4 Old 06-08-2012, 09:28 PM
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Good for you for wanting to come to that goldfish's rescue! A lot of them are kept in very improper setups. One of the most important things to remember is to get the fish adjusted to the new parameters (even if they are for the better) very slowly. Do small, daily water changes for at least a week to allow the fish to get used to the new, clean water. A sudden change in water parameters, even for the better, can kill a fish.

Breed of goldfish is rather important for long-term care. The single tail goldfish have the potential to get very large and will need at least a 55 gal tank and potentially a pond. The double-tail fancies can survive in a 20 gal tank (bare min tank size), but you will need a very powerful filter with a lot of surface area. I think the goldfish will fare a lot better in a 40 gal long. That way you will be able to add another goldfish buddy. A 55 gal would be best: more swimming room and more water to dilute wastes and offer a buffer zone for the water parameters.

As Taz suggested, the API test kit is a great idea. I test my goldfish tank more than I test any other tank. The API kit has been a godsend.


Sitting by the koi pond

writings on fish and fishkeeping

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post #4 of 4 Old 06-10-2012, 02:19 PM Thread Starter
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All the info was quite helpful. The person gave it to someone else, so hope the goldfish is going to a good home =). I'll keep the info knowledge in case I ever do get goldfish.

Thought I would update

10 Gallon Tank - Starting Small! Planning to upgrade when I move out of my apartment!
1 - Black Lyretail Molly (F)
1 - Dalmatian Lyretail Mollly (M)
1 - Gold Dust Molly (F)
FluffyWolf2 is offline  

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