How cold is too cold for tropical fish?

Temperature is just one factor we need to consider when caring for our aquatic pets; others include water quality and a healthy diet. Too high or too low, and your tropical fish could fall ill. Goldfish prefer constant temperatures between 68° and 76° F, while cold-water species thrive at around 65 ° F or below.
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How cold can tropical fish survive?

Although not advised, tropical fish should survive in cold water for 1 or 2 days providing the temperature is only around 10°F to 15°F below their suggested temperature. As long as the temperature change isn't huge, water that is too cold is less harmful than water that is too warm.
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Is 24 to cold for tropical fish?

The best temperature for your fish depends on the species, but in general, tropical fish are most healthy in the range of 75-80°F (24-27°C).
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How can I tell if my fish are cold?

The most common sign of temperature shock is lethargy. Fish are cold-blooded, so unlike mammals who generate their own heat, they can only absorb warmth from the water. When the water is too cold to do this, they'll often stop moving.
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Will tropical fish survive without a heater?

Tropical fish require a heater in their tank to maintain their water at the appropriate temperature. The general range for tropical aquariums is 75–80 degrees Fahrenheit. Left alone, the aquarium water temperature will eventually match the surrounding air temperature.
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Top 10 Coldwater Fish That Don't Need a Heater



How can I heat my fish tank without a heater?

What Are The Best Things To Do To Keep A Fish Tank Warm Without A Heater?
  1. Use a smaller tank.
  2. Get coldwater fish.
  3. Turn up the heater in your house.
  4. Move the aquarium in a warmer area of your home/closer to a heater.
  5. Use warm water for water changes.
  6. Insulate the glass walls of your tank.
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Can cold water fish live in a tropical tank?

Many cold water aquarium fish can live in warm, tropical water.
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Should my tropical fish tank feel warm?

Generally it should feel warm, yes.
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What temp should a tropical tank be?

Tropical fish, for example, do best between 75° and 80°F, goldfish and other "cold-water" species prefer temperatures below 70°F, and temperate fish can be found in habitats that overlap tropical and cold-water realms.
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Why is my fish floating upside down but still alive?

The impaired buoyancy in fish is caused by a malfunction of their swim bladder. When affected by Swim Bladder Disorder fish will often lose the ability to properly swim. They will float uncontrollably to the top of the aquarium, turned upside down, while still being alive.
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Is 25c OK for tropical fish?

Most aquarium heaters are preset to 25 Celsius, (78 Fahrenheit,) and that's the temperature that an average tropical aquarium should be. The vast majority of tropical fish we keep are fine at that temperature, so many people never alter from the heater's preset temperature.
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How long does it take for 5 gallons of water to get to room temperature?

In most cases, 15 minutes is sufficient for the temperatures to become equal. If there is a lot of water in the bag, however, or if you can feel a large temperature difference, it may require more time.
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Can tropical fish live in 30 degrees?

Safe Temperature Range

As long as the water temperature does not remain above 86 degrees Fahrenheit and 30 degrees Celsius for weeks on end, you need not be concerned. However, as the temperature rises, the dissolved oxygen in the water decreases. If you have a good filtration system, odds are you won't have a problem.
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Is 26 degrees OK for tropical fish?

As an average, a tropical fish tank should be kept at around 26-27 degrees Celsius (79-81 degrees Fahrenheit). This is NOT by any means set in stone though however this temperature range covers the most tropical fish at a comfortable temperature.
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Can neon tetras live in cold water?

Like most types of tetras, these fish aren't very large and can be kept in a pretty small tank. When it comes to setting up their habitat there's not much to worry about as well. They can thrive in cold water, a range of pH levels, and a variety of decorations and layouts.
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Why are my tropical fish dying?

The two biggest reasons for fish illness are stress and dirty water. While some healthy fish can fight off the infection and get healthy, the weak ones may die. Therefore, it is important to watch for the signs of stress in your fish. Ich– It is a parasitic infection that passes in one fish from another fish.
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Can I put ice cubes in fish tank?

Avoid putting ice cubes directly into your aquarium unless you make them with reverse osmosis or dechlorinated water. Perform small partial water changes with slightly cooler water, making sure not to drop the temperature of your aquarium too rapidly.
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Should you turn the light off an aquarium at night?

Aquarium fish do not need light and it is best that you turn it off during the night. Leaving the light on can cause stress to fish as they need a period of darkness to sleep. Too much light will cause algae to rapidly grow and make your tank look dirty. So the short answer is no, do not leave your lights on.
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How often should I feed tropical fish?

In general, most fish do quite well on one or two feedings per day. Most fish require 16 to 24 hours to fully digest the food they eat, so a once-a-day feeding is quite sufficient. However, some owners prefer to feed their fish very lightly twice a day.
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Why are my fish gasping for air after water change?

What is this? Ammonia and Nitrite poisoning harm the gills of fish, which leads to respiratory stress. This may be the reason you're seeing your fish dying and gasping at the top or the bottom of your new tank, right after a water change.
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Can I put a goldfish in a tropical tank?

Can I Keep Goldfish In a Tropical Aquarium? Technically, yes, but we wouldn't recommend it. Goldfish have a metabolism that thrives at cooler temperatures than you would typically find in a tropical aquarium.
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Do fish see humans?

Summary: A species of tropical fish has been shown to be able to distinguish between human faces. It is the first time fish have demonstrated this ability. A species of tropical fish has been shown to be able to distinguish between human faces.
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Can I put a heating pad under my fish tank?

Aquarium can also be heated by the use of heating mats which are placed beneath the aquarium. Glass is, however, a poor conductor of heat and thus reduces the efficiency of this method of heating.
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