Goldfish

Originating in China over a thousand years ago, the goldfish is a popular domesticated pet. They come in many different types of varieties and colors, from the original Common Goldfish to fancy Orandas. Questions relating to the care and behavior of goldfish are welcome here.

Asked in Goldfish

How do you tell a female goldfish from a male goldfish?

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The easiest way to tell the difference is that the males may get what are called breeding stars on their gill plates during breeding season. The breeding stars look like small white bumps. This is not always the case though, and sometimes the only way you know is by seeing the female drop eggs, or the male fertilizing the eggs.
Asked in Care of Fish, Freshwater Aquariums, Goldfish

How can you keep fish tank water cold?

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If your aquarium water is consistently too warm for the species you are trying to keep, you can buy an aquarium chiller. These devices cost a fair bit more to buy than a heater, but not that much more to run. The main disadvantage of chillers, other than their expense, is that if you cool the water by more than a few degrees condensation will form on the outside of the glass. Don't use a wooden stand or a stand made of metal that might rust if you are planning on using an aquarium chiller.
Asked in Freshwater Fish, Freshwater Aquariums, Goldfish

Does cold water kill a fish?

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Depends on one's definition of cold. If by cold you mean sea-temperature, then yes there aren't many tropical fish who'd be fond of this. If you mean room temperature, there are many fish which will survive and indeed thrive in these conditions. Mountain-cloud minnows are particularly fond of the 18-24c temperature range and should freely breed in this. If your aquarium water is too cold (20 would be too cold for a lot of common fish like guppies, platys and neon tetras for example) then the fish will be a lot less active in the tank, lose colour and swim with clamped fins.
Asked in Care of Fish, Freshwater Aquariums, Goldfish

How long does it take to clean your fish tank?

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It depends on the size of the fish tank, the type of fish you keep, the filtration that you use on your tank, and whether you are using a bucket method, or have a gravel vacuum that attaches to a faucet
Asked in Betta and Siamese Fighting Fish, Goldfish

Do goldfish have teeth to eat food?

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Goldfish have teeth, but not in the way that you expect them; they are called pharyngeal teeth which are near the throat
Asked in Goldfish

How do you tell if a goldfish is pregnant?

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Goldfish do not get pregnant. They lay their eggs scattered about the tank or pond and then the male goldfish will try to fertilize them with sperm. This includes all types of goldfish from Oranda, Lionhead, Koi, Common, Shubunkin, Ryukin, Fantail, Veiltail, Comet, Ranchu, Black Moor etc. Any strange behaviour exhibited by your goldfish may be related to the female being egg bound, but this is not a common occurrence. If your fish is floaty, it's a swim bladder issue, if it's laying on the bottom with clamped fins, or tilting sideways, it's a water quality problem. The reproduction of goldfish does not, at any point, involve pregnancy. However, if you meant by pregnant "ready to spawn" then a fish who's getting ready to spawn will have a slightly larger abdomen than normal. This swelling is caused by the eggs growing inside her abdomen. You will see thousands of black spots in its belly or its belly will be lots bigger than your other fish You don't! Goldfish are egg layers and can't get pregnant. Goldfish do not have a gestation period as they are egg laying fish and do not get pregnant if its hungry a lot and if its really fat
Asked in Freshwater Aquariums, Goldfish

Do you need a filter for a goldfish pond?

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it is always good to get some kind of filter for your fish, but natural ponds dont' always need one. the filters will keep out some bad bacteria though, and keep your fish healthy longer, and allow you to actually see them. goldfish are very hardy and can withstand quite a bit.
Asked in Care of Fish, Fish, Betta and Siamese Fighting Fish, Goldfish

What does it mean when your betta fish is floating on its side but is still alive?

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Swimbladder is a disease which symptoms cause fish to become unable to swim correctly, your fish may exibit swimming toward the bottom of your tank or bowl, then floating back up, swimming in circles or laying or floating on his side.... There are three main things according to the posts and articles I've read that can lead to swimbladder disease * Constipation (from overfeeding or feeding too rich foods like bloodworms) * Dirty water (from uneaten food or waste products of fish) * Bacteria Treatment: Constipation: First, a betta's stomach is the size of it's eye, so overfeeding can be happen very easily. Stop feeding and fast him for three days. Make an epsom salt bath, in a one gallon tank, use 1 teaspoon of epsom salts in dechlorinated water and leave him in there for 5 to 15 minutes or up to half an hour. Then return him to his previous tank (cleaned and dechlorinated if it is dirty.) Adding some salt to his tank water will help ( 1/2 to 1 teaspoon table salt per gallon.) I have also heard of a the inside of a cooked pea and cut into very small pieces fed to the betta to relieve constipation. You can do this once a week as a preventative. Dirty tank: Do a complete water change and clean everything in the tank with HOT water (no soap) Try and keep the cleaned and treated water to the same temperature so as to not stress the fish. Bacteria: You can check with your local pet store for an antibiotic for the water. Finally, Swimbladder disease is easily treatable and your fish is not a goner. Betta's can live in slightly salty water and it helps to keep the bacteria levels down in the water which can cause fin rot.
Asked in Water Fountains and Ponds, Freshwater Fish, Goldfish

How do you get rid of fish ammonia in pond?

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The best way is to do at least a partial water change - remove some old water & add fresh new. In addition, you should check for too much debris or dead plants in the pond and remove them, and re-plant some fresh new plants. If you have filtration for the pond, consider upgrading it, and lastly, if there are too many fish in the pond (which can happen), try to re-home some of them.
Asked in Goldfish

How will a goldfish explode?

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A goldfish may not physically explode if over-fed, or if too much air becomes trapped in their swim bladder as they are more likely to die from constipation or impaction before they could explode
Asked in Care of Fish, Freshwater Aquariums, Goldfish

When a fish dies should you change the water?

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Not necessarily - if you completely remove all the water, you could lose most of your beneficial bacteria that helped to establish your tank when it cycled. If your fish died from something parasitic, then yes, you need to clean absolutely everything. If it died due to a water quality issue, then no.
Asked in Freshwater Aquariums, Goldfish

Why is my goldfish swimming in circles?

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There may be a water quality issue in your tank. Make sure that you are testing for ammonia, nitrites and nitrates which should be 0, 0, and less than 10 respectively. If you have readings of ammonia or nitrites, or a high reading of nitrates, you should do an immediate 75% water change. Make sure that the new water you add to the tank is the same temperature as the old water, and be sure to add the correct dosage of water conditioner per the directions on the bottle. In addition, check the PH of your tank - it should be 7.2 to 7.6 for your goldfish; if it's too low, it could also affect your fish, and the water change should help that as well.
Asked in Goldfish

Does goldfish give birth to young ones?

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Female goldfish release eggs rather than birth live babies. If there is no male present to fertilize the eggs, then they will not grow fry.
Asked in Care of Fish, Freshwater Aquariums, Goldfish

What size tank do you need for 2 goldfish. I want some coral and sea things but Not too big a tank?

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Goldfish actually require a well filtered tank with room for growth as they can reach large sizes. Goldfish are cold water freshwater fish. Corals and sea things are warm water salt water things. So regardless of tank size compatibility is impossible. A fancy goldfish needs 20 gallons, and then every other fish you add needs another 10 gallons.
Asked in Goldfish

Do you need a license to sell goldfish?

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This will depend on where you live as you may be required to purchase a license and keep a record of what you sell, where, and how much money you make. It's best to check with your local laws or bylaws.
Asked in Care of Fish, Betta and Siamese Fighting Fish, Goldfish

Does your fish tank need a light?

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Well, no but they are a lot better with them. For your fish, not for show, if you have gold fish, if you don't put a light in they will go silver. This is because of the lack of light.
Asked in Goldfish, Definitions

What does Live in a Goldfish Bowl mean?

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Generally it means to be permanently on display to all and sundry.
Asked in Goldfish

Why is my goldfish's tail shredded?

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A shredded tail can be caused by finrot, or from high stress. The first thing you will want to do is test your water for ammonia, nitrites, and nitrates, they should be 0, 0, and less than 10 respectively; if they are not, then do an immediate 75% water change on your tank making sure that the new water you are adding is the same temperature as the old water, and that you add in the correct dosage of water conditioner per the directions on the bottle. You should also be able to get a few things at your local pet store to help, one would be a heater if you do not have one already, the second will be some aquarium salt, and the third would be medicines to help with healing (such as Melafix).
Asked in Betta and Siamese Fighting Fish, Goldfish

Can beta water conditioner be used for goldfish?

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All water conditioner needs to do is remove the chlorine or chloramine from the tap water. Of course it will be OK for Goldfish.
Asked in Goldfish, Carnivores

How can you make your Goldfish A Carnivore?

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They already are. Goldfish food is made of fish meal and sometimes brine shrimp.
Asked in Goldfish

How much dry flakes goldfish food do you feed to one goldfish?

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Feed your goldfish only as much as they will eat in about 2 to 3 minutes twice per day. You will be able to get a general idea of how many pinches of food that is after a few days to avoid over or under feeding them.
Asked in Geology, Care of Fish, Freshwater Aquariums, Goldfish

Can you put any type of rocks in a goldfish tank?

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Maybe, it depends on what kind of rocks..... some may be too rough for your fish and hard to clean. Try to get smoothish rocks so they are easy to clean. Steps to cleaning the rocks 1. soak rocks in HOT water for about 5 min. 2. apply a pea size dot of soap in the warm water 3. add some more warm water to make it bubble 4. scrub the rocks thoroughly for about 20 min. 5. rinse the rocks off very well with warm/hot water until the soap is gone the hotter the water, the better put fish in another bowl with room temperature water... clean out the fish tank out more ROOM TEMPERATURE water in the tank then put the rocks ( that WERE cleaned) in the bottom of the tank arrange them how you would like then carefully put the fish in there tank.
Asked in Care of Fish, Slugs and Snails, Goldfish

Can snails and goldfish live in the same tank?

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yes they can they can because the fish wont harm the snails anytime or day. the fish dont really notice the snails they just think they're rocks
Asked in Goldfish

What does it mean if your goldfish have red lines?

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Typically red lines are blood streaks (normally first spotted in the fins) caused by stress. Check your water quality for ammonia, nitrites, and nitrates, they should be 0, 0, and less than 10 respectively; if they are not, do an immediate 75% water change in your tank making sure that the new water is the same temperature as the old water, and that you add in the recommended dosage of water conditioner per the directions on the bottle. In addition, add in the dosage of Aquarium salt per the directions on the packaging for reducing stress.