How to Take Care of a Goldfish in an Aquarium Tank

Goldfish Aquarium Tanks

The best way to keep a goldfish that you can showcase or simply sit and enjoy for hours, is by placing it into an aquarium. A tank like this is a much better option than a bowl for so many reasons. Aside from the obvious aesthetics reasons and how you can make it a focal point of a room, its more prominent size allows for a larger volume of water for your fish to live in. The more water the easier it is to maintain and keep the water parameters at optimal levels. Read the articles below to learn more about keeping your goldfish in aquariums.

Ttropical freshwater aquarium with fishes

Reviewed By: Tim Winter

Tim Winter has a strong affection for pets and wildlife. His years of experience caring for various types of pets has led him to share his knowledge with others on the best practices in pet care. Tim holds a Bachelor of Science from the University of Oregon School of Journalism and Communications.

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20 thoughts on “How to Take Care of a Goldfish in an Aquarium Tank”

  1. Aquarium salt is a cheap and helps cure ich and saved my goldfish. I now use a gravel vacuum and do bi weekly water changes with water safe treatment added and my fish are thriving.

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  2. My fancytail goldfish is 7 years old n he has tumors all over him but he seems fine. I was told this is normal kinda for older goldfish, is this true?

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  3. We are getting some goldfish in a few days and have had the water in the tank ready , as it is an old tank from when I was little I wanted to get a light for it, we went to our local pet shop and he said we would probably find it hard to get one to fit with it being so old. It suggested using a normal light fitting from a lamp and a normal energy efficient/led bulb. Would this be ok, would it not make the water to warm, or would it be better to get an led strip from eBay?

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    • You really should have a proper cover for your aquarium to keep the water evaporation to a minimum, keep the goldfish from jumping out and keep dirt and debris out. In terms of a light. If you don’t use a standard tank light, you need to make sure the light is 100% completely secure and that it would never have a chance of falling in to the tank. The light bulb should have some sort of housing for safety and the bulb itself needs to be soft light with a low wattage. Goldfish would do fine in a low light environment so the light shouldn’t be too bright or hot for that matter.

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  4. I dont know what happened. I once bought 10 little goldfish at walmart with aquarium and everything. It was a 2 gal. Aquarium. They were all doing good until about 2 weeks later I noticed they were all gone and not swimming like they should. I looked and they were all floating. Dead. All at once. What happened. Poor thing. Could it be that my cousins put some guppies he caught in the river in there with them? By the way, all of the guppies died too.

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  5. Is rain water a good or ok source to use in a goldfish tank? Ive got some rainwater saved and thought about using it when i change my water. jw if that is ok to use.

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    • the chemical make up of rain water can be significantly different than your tap water. If you want to use the rain water, get a test kit and check the ph levels. If they are similar, you can slowly mix in the water. Rain water can contain other pollutants though too so be cautious going forward.

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  6. MIL water in the gold fish tank keeps turning hazy. We have the same tank and our has stayed clear for over a month. She is 87 & keeps her house fairly warm & the tank sits near a window, but does not get direct sun. We have changed the water and it keeps happening. What could be the cause. It’s starting to smell now

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    • What kind of substrate is in the bottom of the tank? some sandy bottoms can cloudy the water. Is the water cloudy when it it comes out of the tap? You might need to let it sit for awhile. The bright light from the window could be causing the water to grow algae. It’s hard to say.

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    • the green spots might me an infection or illness like a fungus but it’s hard to know. I would consult the fish expert at your local pet store and see if they can offer any treatments. You might want to take a photo of it into the pet store. You might be able to get a broad spectrum anti fungal or bacterial treatment.

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