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In a small tank with little oxygen to begin with, this can be devastating. When water temperatures rise, the amount of dissolved oxygen will fall. If you keep your goldfish indoors, you will need to keep it away from direct sunlight, which will heat a goldfish bowl very quickly and lead to warmer temperatures than goldfish can tolerate.

Goldfish have always been portrayed as happy little creatures that live in small bowls, but this is not a healthy environment and would be susceptible to temperature swings and poor water quality, especially if kept in direct sunlight throughout the day. The ideal goldfish tank will be spacious, providing plenty of swimming room to keep your fish healthy and happy. Where possible, try not to keep your goldfish in a tall narrow tank with a small surface area. Oxygen enters the water at the surface, so the larger the surface area, the more oxygenated your tank water. Warm water naturally contains less oxygen, so if the water becomes too warm, you may notice your goldfish gasping at the surface when oxygen levels are richer. If your fish tank only contains goldfish, then the temperature should stay within the ideal range of 68 to 74☏ that I have already mentioned. The ideal temperature of a fish tank should not only suit goldfish but will need to suit any other fish in the tank. What Temperature Should A Fish Tank Be For Goldfish? If you keep goldfish in an outdoor pond, they will be more tolerant of fluctuating water temperatures than if they are kept in an aquarium. A simple aquarium thermometer will help you to monitor your goldfish water temperature.Ĭommon and fancy goldfish can survive in colder or warmer water, but they will be healthier and happier in an environment where the temperature is within their ideal range. Water temperatures that are too cool or too warm can cause health problems for your fish. You should try to maintain the water temperature in your aquarium at 68 to 74 degrees Fahrenheit if you want your goldfish to live a long and healthy life. If you want to watch a short video on Fancy Goldfish water temperature, I found one below on Youtube.įancy Goldfish Water Temperatures How Warm Should Goldfish Water Be? The common goldfish, which is much slimmer, is more closely related genetically to wild goldfish and survives much better in varying conditions.įancy goldfish can live outdoors in a pond but will not do as well as common goldfish, especially when temperatures drop in the winter. Fancy goldfish are selectively bred to produce a variety of unusual features and colors, such as fantails, large bulging eyes, and unusual body shapes.įancy goldfish are a more suitable variety for warm-water community aquariums because selective breeding often makes these fish more susceptible to temperature swings and certain illnesses. Just the name “Fancy Goldfish” implies something a little different about them. With the wide variety of species available, it is sometimes difficult to know which types do better in a warm water aquarium.Īlthough goldfish are lovely, playful creatures, they can often look quite bland in relation to many species of tropical freshwater fish, which is why the “Fancy Goldfish” is becoming so popular.

Goldfish are among the best fish for community tanks. Maintaining a consistent water temperature is more important for goldfish as sudden changes can result in stress, often leading to disease. Goldfish can live in a wide range of water temperatures and are often found in home aquariums with warm water fish. Goldfish are coldwater fish known to be very hardy, especially concerning water temperature. The rest of this article will answer the most common questions from fishkeepers that either own goldfish or those about to buy some goldfish.įind On Amazon or Kindle Can Goldfish Live In Warm Water? So we can see that goldfish can cope with a range of temperatures, so can they live in an outdoor pond in winter, and should you put a heater in your aquarium? Goldfish can survive in cold water, but they will become sluggish and eat less when the temperature is below 60 degrees Fahrenheit. Warmer water temperatures will cause goldfish to grow faster but shorten their life span. The ideal water temperature for goldfish is 68 to 74☏ (20 to 23☌), but they can live comfortably in temperatures from 50 to 80☏ (10 to 26☌). What Temperature Should A Fish Tank Be For Goldfish?.