17

Your goldfish has ammonia poisoning. First aid for this is to change 50% of the water at once. You need to change 20% of the water on day 2 and day 3, and from day 4 you need to change 10% water daily. Test the water for ammonia every day until the level is safe. Do not feed your fish until the ammonia level is safe, and after the ammonia level is safe ...


15

Well, you didn't say so, but I assume you have a thermometer inside your tank, don't you? Or did you measure the temperature using a portable, temporary one? Since your tank is inside your house, it's not directly at sunlight, perhaps some breeze was on it, etc. For the solutions, since it only happens few times a year, I'd go with ice cubes of pre-treated ...


11

Goldfish can live for up to three hours out of water. It also depends on where your goldfish lands. If they landed somewhere moist or in the puddle of water they spilled out of their bowel, they can survive for around three hours. However, landing on a dry surface will kill them in about one hour, due to lack of breathable oxygen for their gills as well as ...


10

You should NEVER release unwanted pets into nature. There are several reasons why this is the worst possible action: Exotic pets have the tendency to survive better than anyone would have assumed. There are flocks of tropical birds surviving in temperate metropoles like Berlin, goldfish and turtles growing to gigantic sizes in rivers and lakes all over the ...


9

My understanding is that this is a myth with a sort-of truth to it: Fish in undersized tanks are more likely to be stressed due to a lack of swimming space (if the species is an active swimmer), overcrowding, and poor water quality, which leads to health and feeding problems. So the growth may be stunted, but it's not something you can really consider as a ...


9

No, goldfish do not "pair up" — not socially, and not even in breeding. Goldfish are okay in smaller numbers in aquariums, but in larger ponds, they'll do much better in schools. If you are moving the fish to a new home, try to add them to their new home all at once. This will help avoid some of the territorial behaviors which can lead to aggression. ...


9

Treat the fish for Ammonia poisoning If it's been any length of time since you took all the gravel, filter, water out and replaced them, you need to do two things: Check the ammonia levels in your tank Treat the tank if the ammonia levels are high What's happened? By washing your filter and gravel in hot water, the chances are you've killed all of the ...


8

Toxotoes answer references an article on trout studies. There's no basis for equating a study on trout with that of goldfish. Moreover, the study referenced doesn't even support the researchers hypothesis. It is true, goldfish, even when kept in good conditions, will only grow to a proportional size of their tank. Unlike other aquarium fish, goldfish ...


8

Fish swimming with their mouth constantly glued to water surface is a sign that they are gasping for breath. However, the reason for them being short for breath usually isn't the low oxygen concentration in the water itself, but toxic effect of water pollutants: ammonia (NH3), which burns fish's gills and disables them from extracting oxygen from the water; ...


7

I just went to the pet store and got an air pump and an air stone and installed them to my fish bowl. I observed that this solved 3 things :- Air bubbles trap some of the dissolved impurities and release them at the surface. Replenishing oxygen level in water by increasing the surface area of water in contact with air. Generating disturbance at water ...


6

It's true-ish. Goldfish don't naturally stop growing, but if their environment is poor (which is usually the case in a smaller tank), they won't be healthy and that will stop/slow their growth. There is an element of truth to this, but it is not as innocent as it sounds and is related more to water quality than tank size. When properly cared for, goldfish ...


6

You are trying to do well by the goldfish. But 3 gallons is still very small for a fish. Your best steps now would be to get more information about fishes and aquaria. While the bigger the aquarium the better they are for fish, they also become expensive. So find out if this is a thing you want to put your money into. Do you want to take care of fishes ...


6

Well, obviously there is a lot you can teach a fish ... I wouln't believe this myself if I didn't see it! Here's a video of a fish doing 10 different tricks in 4 minutes. Although, technically it's not a gold fish, I'm honestly impressed. Star [that's the name of the fish] is a Pseudotropheus socolofi cichlid, most commonly known as a snow white socolofi ...


5

It looks like a fungal infection. It is common for pondfish to get this or other types of problems in the spring before the immune system of the fish starts working (it takes some time for the water to warm to a level where the immune system starts to function). The common treatment for this is to add aquarium salt so the concentration is 0,3% of salt in the ...


4

Ice cubes are a good solution. I live in India where the temperatures go above 40 degrees Celsius for about 4 months of the year. Ice Cubes are what keep my fish alive. During these months my fishes enjoy the ice cubes - I have often found then fiddling around and playing with the ice cubes. Make sure not to add more than 1% of the aquarium capacity in ice ...


4

I have had the same issue last couple of years. I thought instead of making icecubes and treating etc also adding more water to the tank, I filled three 2ltr water-bottles and froze. No worries for the smell. Also using one at a time in the tank allowed me to have a standby ready anytime I needed. Seemed to do the trick. I lost no fish. I should say though ...


4

You're correct about the oxygen. Warmer water dispels oxygen faster than cooler water. Sometimes the water returning from the filters is enough to add enough oxygen for fish, but sometimes it does help to add an air stone. Like you've discovered. I've heard of people keeping goldfish in the same temperature range as tropical fish, but in my opinion they ...


4

Yes, you did the right thing. There's no telling if the fish would have woken up to eat but most likely not, meaning that the food just sits in the bottom and detereorates, fouling the water more. Remember that these are fish, they will not die if you don't feed them for a day. Heck, there's stories out there of fish surviving a month with no food (they ...


4

You can buy long-handled scrapers or hand-held scrapers with a steel blade. Something like this: http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=26097 My husband uses the handled type in our 30 gallon tank and the non-handled one in my 4 gallon tank. (He also has a magnetic one hanging around for when he doesn't want to stick his arm in the ...


4

Your tank is way, way too small. Fancy goldfish need about 20 gallons (about 75 liters?) for the first fish, and 15 gallons (56 liters) minimum for every fish you add after that--so a pair of fancies needs at least 35 gallons, etc. I'm not sure what you mean by "hardy" goldfish, but I'm thinking you mean comets, which grow too big to be housed in most ...


4

It seems that a common consensus from most goldfish-themed websites is 20 gallons (76 liters) for the first goldfish, and then 10 gallons (38 liters) more for each additional one beyond that... so in your case, 4 fish would be good.


4

Short answer: A bowl is too small for goldfish. They need at least a 21 gallon / 79 liters (80 cm length) tank with a good filter because they produce too many organic material; more than most of fish. While you do not buy a new tank, it would be good idea to change 40% of the water everyday. You should keep the water alkaline. ...


4

It is in fact very harmful to put fish into an aquarium on the same day you've set up the aquarium. An aquarium needs to cycle before you can add any fish to it. More information about that here Also, as mentioned before, a bowl is too small for goldfish, in fact it is too small for any type of fish. If you are serious about keeping goldfish, have a look ...


4

It sounds like what you need is DVD of an Aquarium. There are several varieties at Amazon or ebay as well as other retailers. No feeding, no cleaning, and no worries.


4

Welcome on Pets! First of, please research what goldfish need for an habitat before you buy the next ones. Wikipedia is good starting point. Please note that common goldfish can grow larger then 16 inches (30cm). Size: You will find in short order that the bowl in the picture is way to small for any fish to live in. Water: If you know that the tap water ...


4

Yes, it's possible to train goldfish to a limited extend. The Mythbusters did an experiment where they trained groups of goldfish to swim through a very simple labyrinth. The goal was to let the fish swim from one end of the tank to the opposite. They placed up to 3 clear walls successively in the tank with brightly highlighted holes as passages. After ...


4

Animals certainly have "preferences". The color of the substrate can mean many things to them, one thing being the fact that they can "hide" near it or not. A dark fish will be "camouflaged" if it's near dark substrate, and a pale fish will be more difficult to spot against a pale background. Fishes are aware of this and therefore may be more stressed when ...


4

I think your goldfish has a virus infection. This might lead to a tumor forming later. The only thing you can do about this is to be sure the water quality is as good as possible and to elevate the temperature in your tank to 22 - 24°C and hope your fish can fight this on his own (goldfish are cold water fish so a temperature of 15 - 25°C is ideal ...


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