How long does it take for a fish to come out of shock?

Whilst some fish will tolerate an instant change, some won't, so it is ideal to change pH slowly over several days, a rate of change of 0.5pH changes per 48 – 72 hours should be fine for most fish, however, the slower this change is, the safer it is.
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How can you tell if a fish is in shock?

If your fish is swimming frantically without going anywhere, crashing at the bottom of his tank, rubbing himself on gravel or rocks, or locking his fins at his side, he may be experiencing significant stress.
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Can fish recover from cold water shock?

If you think your fish has succumbed to rapid cold temperature shock then you should try to warm the water up as quick as possible. If after, a few minutes he starts moving again then you've just saved his life.
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How long does temperature shock last?

Because the lifecycle of the ich protozoa is temperature-dependent, and the organism cannot live without fish, if you raise the water temperature of the original tank to 78 to 80 degrees, the ich should die within two to four days.
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Why are my fish not moving after water change?

A fish that goes through thermal shock will not move a lot, lose its color quickly, and may die almost immediately after a water change. Consequently, the immune system of the fish that survive may be compromised.
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My 3 Tips for [Fish Death and Stress Immediately after a Water Change] ***What Can We Do?***



Can hot water shock fish?

Temperature shock[edit | edit source]

A sudden change of the water temperature can often prove fatal to fish, especially small fish or fry. In general it is the drop in temperature that is more common than a rise and more likely to kill the animal.
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Why is my fish barely moving?

If fish are experiencing acute stress (i.e., gasping up at the surface, lying on the bottom and not moving, or darting around the aquarium), you can be pretty sure that the water has been poisoned in some way. Maybe cleaning sprays got into the aquarium, or something released toxins into the water.
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How do you treat a stressed fish?

Change water frequently to keep nitrate and ammonia levels low. Try adding water conditioners like API Stress Coat Aquarium Water Conditioner, which is formulated to reduce fish stress by 40% by removing dangerous toxins.
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How much of a temperature change will shock fish?

I manage to keep mine to 1-2 °C temperature change when doing up to 50% water changes. That is, the new water is warmer than the existing, and I add cold until it's at least within 1-2 °C, normally and then siphon it into the tank. I can get it down to 0.5 °C without too much difficulty.
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How long does fish stress last?

Long-term Stress

Throughout the period of adaptation, the fish still prioritizes reacting to the new environment and remains stressed, so its immune system suffers and it is prone to disease. Adaptation normally lasts from four to six weeks.
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Can a stressed fish recover?

Aquarium fish can become stressed by any number of things ranging from poor water quality to disease to changes in tank parameters. In some cases, mild stress is something your aquarium fish can recover from but, in many cases, it is an early sign of something that can become a major problem.
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How do I bring my fish back to life?

Place the goldfish in a container filled with cool water from his tank. The cool water contains oxygen and will help to revive your fish. Some experts also suggest placing your goldfish right back into the water in his tank, even if he appears dried out.
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How long does it take fish to adjust to new tank?

A smooth transition is the ultimate way to acclimate the fish to its new home. Most people will tell you that it takes about 15 minutes for fish to acclimate to an aquarium. While this is partially true, it takes at least an hour for a new fish to adjust entirely to a new environment.
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How do fish act when they are dying?

Weakness or listlessness. Loss of balance or buoyancy control, floating upside down, or 'sitting' on the tank floor (most fish are normally only slightly negatively-buoyant and it takes little effort to maintain position in the water column) Erratic/spiral swimming or shimmying.
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Are water changes stressful for fish?

When a sudden, large water change occurs, it causes such a drastic shift in the water parameters that the fish often cannot tolerate it and they die. 2 Those that do not die immediately are stressed and may succumb to disease over the next few weeks.
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Why is my fish swimming up and down?

Fish exhibit many behaviors that tell us how they are feeling, and glass surfing (also known as pacing) is one of them. This is when fish constantly swim up and down the sides of the aquarium glass. One reason they do this is stress. It could mean they aren't happy in their environment, for one reason or another.
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What are some signs of ammonia stress in a tank?

Signs of Ammonia stress
  • Lethargy.
  • Loss of appetite.
  • Hovering at the bottom of the tank (especially for surface dwelling fish)
  • Gasping at the surface.
  • Inflamed gills.
  • Red streaks or inflammation in the fins.
  • Inflamed eyes or anus.
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Is it normal for fish to stay still?

When the water temperature inside your aquarium drops too low, your fish might lay motionless at the bottom of the tank to conserve energy. On the opposite spectrum, if the water temperature rises dangerously high, fish will stay on the bottom because that's where oxygen levels will be higher.
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Why are my fish staying in one corner?

Just like sickness, they stay in the corner because they feel vulnerable. Unfortunately, there's not much you can do for this one except wait for it to pass. Lastly, they may be doing it because there aren't enough hiding places in the tank—all fish like lots of hiding places where they can feel safe and rest.
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How do I save my dying fish?

How to Save a Sick Fish
  1. Step 1: Check Your Water Quality. Poor water quality is the #1 cause of illness and disease in fish. ...
  2. Step 2: Fix Your Water Quality. ...
  3. Step 3: Check Your Fishes' Food. ...
  4. Step 4: Call Your Veterinarian About Your Sick Fish.
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How much temp change can fish handle?

How sensitive are fish to fluctuations in temperature? Fish can detect small changes in temperature - some as small as 0.03C. Some fish succumb to whitespot and other stress-related diseases, while others tolerate change fairly well, as long as it's gradual.
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How do you prevent pH shock in fish?

Changing the water in an aquarium, while it's an often necessary occurrence, is often stressful to fish. If your fish suddenly change color after a change in their water, make sure you are doing only partial water changes, and double-check to make sure the chemicals in your tank are balanced as they should be.
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Why is my fish hiding and not moving?

Environmental Changes – Anything that alters a fish's environment can spook the fish into hiding. This can include sudden water changes, temperature shifts, pH changes or chemical imbalances. As the tank stabilizes at the optimum environmental conditions, the fish should lose their shyness and stop hiding as much.
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Does putting a fish in the freezer revive it?

Certain species of fish do survive in frozen or near-freezing temperatures, during what is called an “overwinter” by the NOAA. They will go dormant, often burrowing into sand or hovering in large groups, and “revive” when the water warms up or thaws.
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