Tropical Fish Keeping - Aquarium fish care and resources

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Aluyasha 12-26-2010 12:26 AM

Ryukin Goldfish Question...
I have wanted to get some Ryukin Goldfish for a long time now and was looking up information on them but alot of the informantion varies greatly.
I was wondering if you all have some and might be able to share your opinions on their care.
Here is my current setup:
I have a 15 gallon tall, lots of plants, great heater, filtered, well cycled. There is Platies living in it right now but they are moving to a friends house, I was hoping to get two Ryukins. I replace 20-30% of the water every tuesday and siphon every friday.
My mother has owned goldfish for years and years now, so I am familar with their basic care and behavior.
If you have any questions, please ask. I want to make sure all my current and future pets are and will be cared for properly.
And for the record, I will get a bigger tank sometime, just not in this house I am in right now for I am only allowed to own 15 gallons and under.
Also, if you all tell me that that is too small a tank, then I will not get any goldfish.
Hope everyone had a happy holiday!

Malvolti 12-26-2010 12:44 AM

I've kept plenty of Goldies over my days, Common goldies, Fancy tails, Black Moors, Shubunkin, even pond Carp. I usually started with a small one in a 10 gallon tank but they do grow. Eventually they need upwards of 20 gallons (My shubunkin especially, he got MASSIVE, he was also 16 years old). My Fancy tail though had more than enough space in my 20 gallon by himself.

To start a 15 gallon tank will be fine if you buy one of the smaller fish in the store, maybe an inch or two long, but you need to accept that within a year or so depending on how fast it grows you will need to get a larger tank. They can also live 20+ years if well taken care of so they can be quite the commitment.

My parents hated my Goldfish because they ended up taking so much room. When we got them the guy at the store said they would die in a year... unfortunately for my parents I researched proper goldfish care.

Aluyasha 12-26-2010 12:57 AM

Well my lease ends next oct. Once I moved into my new house I was going to get my moms spare 29 gal. How is that for one or two?
I heard they do not like to be alone...
And I know goldfish live a very long time. Even though everytime I go to the petstore or talk with one of my friends, they always tell me they live like 3 years tops. But I know better. :)

Malvolti 12-26-2010 11:27 AM

29 gallons should be good for 2, the general rule of thumb for goldies is 20+10 for each aditional fish.

Lupin 01-02-2011 06:45 AM

Here are some info you might like to read. It's unfinished but the essential info are there.


Aquarium Size, Variants of Goldfish and General Guidelines
A. Impracticality of “Traditional” Fishbowls and Aquarium Size Guidelines for Fancy and Pond Goldfish

In China, for several centuries, it has been their tradition to place goldfish in their fishbowls. This trend continues until today and will continue so despite the attempted passing of the bill by several countries particularly in Europe to ban the use of fishbowls towards goldfish due to the number of incidence where goldfish die within a few days or even weeks as a result of ignorance shared by a lot of people who buy fish without doing their homework first. To understand better why the fishbowls became part of the Chinese tradition, in China, their ardor usually is not spacious thus large aquaria are not an option for them to keep their fish in. Round smooth bowls were designed with great effect including the fish in them that they become part of the ambiance. China is a temperate zone. Unlike the tropical areas, in temperate areas, goldfish do not eat a lot due to the low temperature wherein their metabolic rate decreases significantly and in turn, reducing the pollution.

Nowadays, a lot of hobbyists have access to larger house and lots and modern technology thus improving the life support systems further. They are able to accommodate large aquarium systems which benefit the goldfish greatly. Aquarium size is a very important factor that must be carefully planned as it greatly influences the potential of the fish to reach its adult size. Aside from that, this helps the fish utilize their excess carbohydrates that they accumulate from consuming foods containing excess carbohydrates. If you have heard the saying, “the solution to pollution is dilution”, the saying is indeed very true.

Goldfish are no stranger to severely deteriorating water conditions however like all other fish, they become prone to several health issues as a result of the poor water conditions. Unfortunately for the fish, they produce a heavy amount of urea and feces especially when their metabolic rate is increased due to the elevated temperature. As a result, the water quality deteriorates rather rapidly especially when the tank is rather less than ideal in size.

Considering goldfish themselves do not stay small (which is why fishbowls are impractical nowadays) at 8 to 24 inches range, a general guideline for fancy types should be at least fifteen gallons per fish whereas pond types need at least twenty gallons per fish. Previous debates have been offered that the fancy types need a minimum of at least ten gallons per fish. While this point of argument does prove itself feasible, giving more allowance for space would be a much better option for the goldfish.

The above paragraph does not mean you can freely utilize the spare fifteen and twenty gallon tanks for goldfish. Those tanks are still very limited and you cannot keep goldfish in isolation as these are sociable by nature and unlikely to thrive for a long time if deprived of their company. With the number of goldfish suggested at three as the possible minimum, a 55g would be a best starting point for fancy goldfish whereas 75g would be the minimum for at least two to three pond types.

B. Variants of Goldfish

As the goldfish has been bred for decades, many strains have been formed as a result of selective breeding. This in itself complicates matters further as the different body formation of the fish also requires a few perks in how you attempt to accommodate them to avoid any future issues that will prove detrimental to their health.

For instance, bubble eyes are famous for their large bulbous eye sacs that dangle below their eyes. The eye sacs are quite delicate and easily punctured hence you have to avoid sharp edged decorations if you want to keep their eye sacs intact. Although the eye sacs will normally heal themselves, the injured sac will usually look very different than the previous. A lot of round bodied types are prone to buoyancy problems due to the compressed organs brought about by their distended abdomen. There are many causes to buoyancy disorders which we can cover later on as we go further into this.

Fancy Types
Doubletail with dorsal fins
Black Moor/Demekin/Telescope/Globe Eye
Tikus Pearlscale
Crown Pearlscale

Doubletail without dorsal fins
Bubble Eyes

Pond Types
Singletail with streamlined body
Common Goldfish/Hibuna

Singletail with rounded body


C. Stunting Explained

Stunting is one of the most controversial subjects in the history of aquarium trade. Until now, it remains a debate with various theories given as to what causes the fish to stunt. This complication is brought by the fact that there are differnt variables that influence greatly the growth rate of the fish.

Stress is the number one factor that is quite overlooked when it comes to stunting issues being addressed. When a fish becomes stressed, it releases the hormones, norepinephrine and epinephrine in response to stress, both of which reduce the growth hormones greatly. Once the stressor has been removed, the fish may gain a growth spurt due to the rebound effect by releasing more growth hormones. For further scientific studies, the abstract can be found here. Another abstract describing further what stress is, can be found here.

Stress occurs because of various factors. One such factor to address is overcrowding. This is a very commonly done mistake in the aquarium hobby. Many people have the tendency to buy a lot of fish on impulse and forget that their fish are still on growing stage. In overcrowded tanks, fish cannot feel comfortable or secured because of constant activities which eventually stresses them and makes them more vulnerable to health issues. The lack of space prevents the fish from developing normally as they should have. Overcrowding also encourages the proliferation of parasites whether fatal or not thus the fish are extremely stressed by the constant infestations and secondary infections.

D. Attitude/Behavior

E. Aquarium Location

Location is another one of the factors to consider. Fish are extremely sensitive to sounds and movements. Sounds can travel by twice as much in water than in air and this can be quickly detected by the lateral line system found on the flanks of the fish which enables them to find their way around their surroundings.

Make sure your aquarium is located in a dark or moderately lit portion of area. Avoid placing the aquarium under direct sunlight. Why? Exposure to sunlight can cause the temperature to fluctuate a lot that the goldfish becomes agitated by the depleting oxygen, elevated temperature and rapidly deteriorating water conditions as a result of high metabolic rate. High temperature itself can lower oxygen levels and causes the fish to gasp to the surface as goldfish are heavy oxygen consumers.

Traffic area also affects the fish and can possibly stress them. Too many movements around the aquarium area can frighten and stress most fish as they become agitated by the constantly high traffic area although goldfish in general, can learn to interact with the presence of humans as these fish are highly intelligent animals.
Edit: Can't manage to edit the rest of my articles to fit 10,000 character limit so check two more links to follow two other important chapters of my article.


Aluyasha 01-02-2011 10:29 AM

Thank you Lupin.
I have never owned fancy goldfish. My mom has always had common and comet goldfish, but I know their care is slightly different.
I also know that I cannot buy just one goldfish, they are social fish. Also, if I cannot meet the proper conditions I will not get goldfish.

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