How hot can goldfish tolerate?

Although goldfish can live in temperatures as high as 30 degrees centigrade, experts recommend keeping them in water that's between 23 and 24 degrees.
Takedown request   |   View complete answer on howtotakecareofgoldfish.com


What temperature is too hot for goldfish?

What water temp is too hot for goldfish? Your goldfish will become very stressed if kept in water that is warmer than 27°C / 80°F. What is this? Avoid placing your tank in direct sunlight or near radiators so that your water temperature stays below this level.
Takedown request   |   View complete answer on thegoldfishtank.com


Is 90 degrees too hot for goldfish?

So, essentially, if you're keeping your goldfish indoors, the optimal and recommended temperature is between 72 and 75 Fahrenheit, but they can be kept at lower, and slightly higher, temperatures.
Takedown request   |   View complete answer on itsafishthing.com


Is 78 degrees too hot for goldfish?

As water temperature rises from 58 to 78 degrees, the toxicity of a fixed concentration of ammonia doubles. Water that might be marginally safe for goldfish could be chronically poisonous at higher temperatures.
Takedown request   |   View complete answer on be.chewy.com


Can goldfish survive in warm water?

Although traditionally thought of as cold-water fish, goldfish can live happily in warm waters. In fact, many of the 'fancy' strains of goldfish do better when kept at temperatures in the low to mid-'70s. The higher temperature is better for their metabolism, leading to stronger, healthier fish.
Takedown request   |   View complete answer on fishkeepinganswers.com


What's the Maximum Temperature a Goldfish Can Tolerate?



Do goldfish get lonely?

However, we can say that it is very unlikely that goldfish get lonely. What is this? Goldfish are just not the same as humans – they're not social animals in the same way that we are, and they don't have the same capacity to get bored or long for companionship.
Takedown request   |   View complete answer on thegoldfishtank.com


Do goldfish like light?

Yes, goldfish need light and they also need nightly periods of darkness. What is this? Using lights to illuminate your tank and simulate a day / night cycle is beneficial to your goldfish, the overall health of your tank and is an important aspect of successful goldfish care.
Takedown request   |   View complete answer on itsafishthing.com


Can goldfish live in 75 degree water?

The best water temperature for goldfish is between 23-24 degrees centigrade which is (73-75°F). Although goldfish can live in temperatures as high as 30 degrees centigrade, it is recommended that they are kept in within this range. Goldfish can become stressed in higher temperatures.
Takedown request   |   View complete answer on fishtankmaster.com


Can goldfish survive outside in summer?

Which fancy goldfish types can be kept outside? You can keep any type of fancy goldfish outside in a species-only pond during the summer if temperatures don't regularly exceed ~85 °F/29 °C. Please don't mix your fancies with single tailed goldfish or koi!
Takedown request   |   View complete answer on aquariadise.com


Why is my goldfish laying on the bottom of the tank?

Usually goldfish sit at the bottom of the tank due to not feeling well for some reason. Improper water conditions, parasites, stress, GI problems, and swim bladder problems can all cause a fish to sit at the bottom of the tank.
Takedown request   |   View complete answer on thegoldfishtank.com


How many goldfish can be in a 10 gallon tank?

You can put two to four baby goldfish in a 10-gallon tank, but you should move them to a larger tank when they reach 2.5 inches in size.
Takedown request   |   View complete answer on cuteness.com


How many goldfish can you have in a 20 gallon tank?

The general rule of thumb is 1 gallon of water per 1 inch of fish. This means a 20-gallon tank is big enough to house 20 small goldfish. It is important for the health and wellbeing of your goldfish that you provide them with adequate space to swim freely.
Takedown request   |   View complete answer on petsgal.com


Can goldfish survive 26 degree water?

Although goldfish can live in temperatures as high as 30 degrees centigrade, experts recommend keeping them in water that's between 23 and 24 degrees.
Takedown request   |   View complete answer on howtotakecareofgoldfish.com


Do goldfish need a tank heater?

Conclusion. In summary: Goldfish don't need heaters – most of the time. If the conditions of your home or outdoor environment get too cold for either fancy or common Goldfish, you may need a heater. Remember that Goldfish are endothermic, meaning their metabolism is controlled by the external environment.
Takedown request   |   View complete answer on buildyouraquarium.com


How hardy are goldfish?

Slim-Bodied goldfish are extremely hardy and make great first pets for those new to aquarium keeping. Fancy goldfish, such as black moors and orandas, are colorful, unique and more suited to keep as a hobby. Goldfish are competitive eaters and very interactive with their owners.
Takedown request   |   View complete answer on tetra-fish.com


Is 77 degrees too hot for goldfish?

Cool water fish, like goldfish and koi, need water that's much cooler than that – between 60 and 75 degrees F (15 and 24 C) or even colder. Remember: Goldfish don't do well in temperatures above 80 degrees F.
Takedown request   |   View complete answer on fishlab.com


Can a goldfish pond get too hot?

Water doesn't need to reach the boiling point or even feel hot for it to cause stress or even real harm to your pond life. In fact, if the water temperature gets above 80F it's already too hot for most fish and no fun for your plants, either.
Takedown request   |   View complete answer on aggie-horticulture.tamu.edu


Does heat affect goldfish?

While some fish like Discus, Clown Loaches, Bettas and Rams thrive at temperatures in the mid to upper 80's, most tropical fish prefer 74° to 80° F, common goldfish do best at 60° to 70°F, and fancy goldfish should be kept between 68°and 74°F.
Takedown request   |   View complete answer on aqueon.com


Does a goldfish sleep?

Unlike people, goldfish do not lie down when they sleep. Rather, they become less active, staying in one place and moving slowly to keep themselves stable. They look like they are hovering in the tank or pond, usually low in the water, an inch or so off the bottom, with their heads pointed slightly downward.
Takedown request   |   View complete answer on petmd.com


How big can goldfish get?

According to National Geographic, goldfish are usually around 7 to 16.1 inches long and weigh 0.2 to 0.6 pounds, but can top 5 pounds in the wild.
Takedown request   |   View complete answer on cbsnews.com


Can betta fish live with goldfish?

Short answer, no! There are many reasons why these two fish cannot be tank mates. First of all, a betta fish is a tropical fish, originating in the waters of Thailand, the betta needs waters of 78 – 80 degrees Fahrenheit. Goldfish, however, prefer cooler waters of around 74 degrees Fahrenheit.
Takedown request   |   View complete answer on japanesefightingfish.org


Can I touch my goldfish?

Make sure you feed your goldfish every day. Make sure you never touch your fish. You can damage the slime coat they have to protect themselves from infection.
Takedown request   |   View complete answer on wikihow.com


How do you know if goldfish is happy?

Signs of a Happy Goldfish

Your goldfish should be swimming constantly and not floating, bobbing or sinking. They should eat regularly and eliminate their waste frequently. Provide some variety in your fish's diet. Pellets everyday can become boring.
Takedown request   |   View complete answer on cuteness.com


Why do my goldfish turn white?

Did you know that goldfish have pigment in their skin? This pigment can react to UV light in some fish. So, your goldfish could turn white due to both a lack of sunlight or too much sunlight. In the case of too much light, fish usually respond to the dramatic change.
Takedown request   |   View complete answer on aquariumsource.com


What size tank do I need for 2 goldfish?

Based on the rules above, the goldfish tank size we recommend for two goldfish is: 42 gallons for two Common goldfish. That's 30 gallons for the first fish and 12 additional gallons for the second fish.
Takedown request   |   View complete answer on thegoldfishtank.com
Previous question
Should I use a pool clarifier?