Why Is My New Betta Fish Hiding and Not Eating? (Solved)

Introducing a new betta fish to your home can be an exciting and nerve-wracking experience. On the one hand, it’s fun to watch him swim around his tank and explore everything he encounters. But why is my new betta fish hiding and not eating?

Conversely, it can quickly become worrying if you notice him lying low at the bottom of his tank or not eating anything.

If this is happening with your betta fish, don’t worry – there may be several explanations for why your new aquatic companion isn’t behaving as expected, which is entirely fixable.

Betta fish hide

In this Exclusive post, we will discuss all potential causes for why a beta fish might stop eating or is hiding and provide tips for betta owners on how you can help alleviate these issues so that he returns to life in no time!

Why Is My New Betta Fish Hiding and Not Eating?

It’s important to understand that a new betta fish may need some time to adjust to the change of environment and acclimatize itself. Hiding and not eating is a sign that your betta fish is stressed, likely feeling overwhelmed in its new home.

To help reduce this stress, it’s best to provide a low-traffic area with plenty of hiding spots, such as floating plants or decorations, and avoid sudden movements around their tank.

why does my betta fish stare at me

Additionally, it would be best to refrain from overfeeding your fish as they will fill up quickly but not receive all the nutrients they need from uneaten food rotting away in the tank.

A low-protein diet can also be beneficial in calming an anxious fish, so consider reducing the protein content of their food if needed. Finally, whispering near their tank could help them feel more at ease by recognizing your voice as an indicator of safety!

Is It Normal for New Betta to Not Eat?

It is usual for new betta fish not to eat, mainly if they’ve just been transported. This could be because of low water temperature, a stress response from being moved, or even because he’s still settling into his new home.

To help your new betta fish adjust and get back to his regular eating habits, here are some tips:

  • Check the temperature of your tank – betta fish prefer water between 75 to 82°F.
  • Keep the environment as stress-free and peaceful as possible; this includes avoiding sudden movements or loud noises near their tank.
  • Provide variety in his diet by offering a range of foods such as bloodworms, pellets, and vegetables.
  • Ensure the tank is clean and free from harmful toxins or chemicals that could make your Betta unwell.
  • Provide plenty of hiding places with plants or decorations in the tank to make him feel safe.

These steps should help your new betta fish adjust to his new home and resume regular eating habits. If, after a few days, he still isn’t eating, it’s essential to take him to the vet for a check-up. 

How Long Does It Take a Betta to Adjust to a New Tank?

A betta fish typically takes a week to get accustomed to its new tank. During this time, it is perfectly normal behavior for the betta fish to hide and not eat much, if anything at all.

This is because the Betta needs some time for its body chemistry to adjust to the new environment for its metabolism and behavior to become normalized. 

For your betta fish’s transition into the new tank environment to be as smooth as possible, ensure that you have provided suitable water conditions (water temperature between 76-82°F; pH levels of 6.5-7.5).

Additionally, provide plenty of hiding spots within the tank setup, such as plants or decorations, where they can feel safe.

You should also add small amounts of food every few hours until your betta fish begins regularly eating again on its timetable – usually within one or two days after introduction into their new home.

Why Does My Betta Fish Hide Behind the Filter?

Why is my fish hiding behind the filter? A Betta hiding behind the filter unit can be a sign of stress from being in the new tank. Hiding behind the filter could be a way for the betta fish to feel safe and secure, away from potential predators or other sources of stress.

To help reduce this stress, try to keep their environment as low-traffic and peaceful as possible.

Additionally, ensure the tank is clean and free from toxins or chemicals that could make your Betta uncomfortable. Provide plenty of hiding spots such as plants, decorations, and caves for them to feel secure.

Is It Normal for Betta Fish to Hide?

Is it normal for bettas to hide? Yes, hiding is a natural behavior of betta fish and can signify feeling content in their environment. Hiding provides them with security from potential predators or to retreat when they feel threatened or stressed.

However, if your betta fish constantly hides, it could indicate something isn’t right in the tank. Ensure their environment is suitable – temperature, water parameters, and decorations should all be checked to ensure they are not stressed or uncomfortable.

Why Are My Fish Hiding All of a Sudden?

If your fish suddenly hides, it could be due to various reasons, including sudden changes in the tank environment, stress from being moved or handled, inadequate tank conditions (temperature and water parameters), or even an underlying illness.

Check that their environment suits them–ensure the temperature is between 76-82°F and the pH levels are 6.5-7.5. Additionally, ensure plenty of hiding spots within the tank, such as plants or decorations, where they can feel secure.

If their behavior continues after making these adjustments, it could be a sign of an underlying illness, and you should take them to the vet for a check-up.

Why Is My Betta Hiding at the Bottom of the Tank?

Your Betta may be hiding at the bottom of the tank for numerous reasons. The most common cause is poor water quality, as bettas are sensitive to ammonia and nitrite poisoning in aquarium water. Check all parameters, including pH and temperature, and perform regular water changes if needed.

Additionally, it could be due to a new or unfamiliar environment, which can lead to stress-related hiding behavior from your fish. Try introducing new decorations like artificial plants or driftwood into its habitat so it feels more secure in its surroundings. 

If you’re keeping your Betta with other fish in a shared tank, one of these tank mates may be overly aggressive or territorial toward it; this could also explain why it’s seeking refuge at the bottom of the aquarium.

If you suspect aggression from other fish species is causing this behavior, consider removing them from your Betta’s habitat immediately for its safety and well-being.

Do Betta Fish Hide When Stressed?

Yes! Betta fish can hide when stressed out or scared. This is because their instinct is to seek safety and protection, which they do by finding a hiding place.

Suppose your betta fish has recently been exposed to something that may cause them stress (such as loud noises, sudden changes in the aquarium’s environment, etc.). In that case, it may hide for an extended period until it feels safe again.

When this happens, you should reduce the amount of stress your fish is experiencing so that it can relax and come out from its hiding spot.

Why Is My Betta Hiding So Much?

Why is my betta fish hiding? It is common for your Betta to hide, as they are a naturally shy fish species. Hiding can signify that your Betta feels comfortable in their environment.

However, there could be other reasons your Betta might need to hide, such as poor water parameters or too much water movement.

To ensure that your Betta feels safe and healthy, ensure all water parameters (temperature, pH level) remain stable and provide some hiding spots, such as a cave or log, for them to access if needed.

In addition, you should also look out for signs of stress-related illnesses such as ich and velvet disease, which cause increased hiding behavior in fish.

Why Does My Betta Fish Hiding In The Corners Of The Tank?

Bettas usually disappear when the pain is intense; therefore, it is best to improve your dog’s health. In wild places, betta environments offer many hiding spots.

Generally, they have a keen hunting instinct, so bettas usually stay hidden behind the vegetation and tend to be hidden. If you find Betta hiding behind her tanks, blame it on their new environment. You have to take into account the need for a betta hiding spot.

In the Betta’s absence, the Betta retreats to a side of the tank, sometimes behind a water filter.

Does Your Betta Need Hiding Places?

Tell me the most important reason to hide your pet. Putting your pet in a bare tank that lacks décor will be considered cruel.

Betta is an intelligent fish that requires physical or psychological stimulation to avoid boredom and tension. It has vast territorial waters and spends several hours in its water tanks daily.

Some territorial behaviors include looking for hidden caves and overhangs. Providing your Betta with hiding places in the aquarium will make it feel safe and secure.

In addition, having a few hiding spots also helps to reduce the stress associated with aggressive fish or other Betta’s tank mates. Plenty of hiding places can help keep your Betta healthy, as it can take refuge from stressful situations or predators.

Possible Reasons Behind a Betta Fish Hiding

It could be that Betta hanging from you, but not all are good reasons to worry. Tell me the best way to fix it:

Your Betta Fish Is Depressed

Betta fish may become depressed. What about the fish confined to the water? All animal instincts are dulled out in captivity, creating an unsatisfactory betta.

Depression can manifest itself in various ways, e.g., exercise is an excellent way to encourage your daughter, and many toys are available online. Simple betta balls are popular toys.

The ball is usually floating in various colors and designs and floats to the surface. Once your betta fish is hiding somewhere, drop the betta balls into the tank.

Tank Filter Current Is Too High

If your Betta keeps hiding, your fish tank filters may be too strong. Although gorgeous, the Betta fish fins are not strong enough to handle strong forces.

Besides, betta fish are no strong swimmers, and swimming against the current is not advisable. So Betta may hide for safety in an unlikely place.

Water Current In Your Tank Is Too Strong

Wild bettas prefer slow-moving water, so the current created by your filters are too strong. Generally, the fish seek refuge in the tank water under filters where currents are weaker. When you see your fish in these spots, you know it’s because of filter flow.

If you are purchasing a filter, ensure the size fits your Betta’s tank size. Betty fish like to swim in the water if there are quick flows in the betta tank water.

Illness or Injury

Sick and injured fish can hide easily inside an aquarium. If you see your betta fish hiding beneath a sand filter in your tank, your pet likely doesn’t have much appetite.

Before parents start putting their fish at risk, they must understand the symptoms and how to treat their animals for their health issues. Most of the time, injuries to fish can easily be detected using careful monitoring.

Poor Water Quality

If your Betta Tank’s water supply is a problem, your Betta may have a problem. Bettas can quickly adapt to their environment, and any adverse change in their fish tank may lead them to behave strangely.

You’ve probably noticed Betta hiding underneath the filters when it has another hiding place nearby. In addition, poor water quality can result in stress and leave your aquatic friend vulnerable to fungal and bacterial infections.

Experienced fishkeeping professionals say if contaminated tanks are not fixed (e.g., poisoning from Nitrids), the fish will be fatal to them.

Bright Lights

Bettas are brightly colored fish with elaborate tail fins. A typical aquarist prefers to display their beauty in bright-colored aquariums. Hobbyists usually need to be corrected about lighting and sometimes make it too harsh.

Bettas are from an ecosystem with abundant aquatic vegetation, allowing fish a lot of time in the shade. When lights are bright in aquariums, you can encourage them to feel nervous and move them to find a quiet spot to escape.

Your Betta Wants To Avoid Other New Tank Mates

When your Betta has a mating tank, she is often lonely. The behavior in bettas is not a mere animal behavior but something many fishes have. When Betta hides, it usually indicates a feeling of stress or a threat to them.

Many bettas share the tank with a buddy they can never meet, and those fish may be big-finned nippers which can cause problems for fish with large tipped tails.

Try changing the betta tank setup if the Betta hides under the tank decorations and the trees around them. If you have mates of other Siamese fighting fish species, you should research to find them.

Nitrite poisoning

Nitride in the blood binds with eutrophic hemoglobin and inhibits oxygen transport. This may lead to a fish that is breathing very hard. The fish move into a place where fish breathe more easily. If you see any bugs in the filter, you’re more inclined not to hide from him.

It is possible to treat the problem quickly and effectively with small parts of water changes that will remove ammonia and nitric oxides from the tank water. Do not do one significant water change because it may upset your gut or kill your pet fish.

Why is my betta hiding in his cave?

Hiding could be normal (stress, comfort), but check water quality, temperature, tank mates. Lethargy, fin issues, appetite loss suggest illness. Observe & if concerned, adjust environment or seek expert advice.

Why is my betta fish hiding behind the filter?

Hiding behind the filter could be stress from strong current, poor water quality, or feeling threatened. Check flow, test parameters, and consider tank mates. If unusual, investigate for illness or adjust environment.

Why is my new betta not eating and hiding?

New bettas often hide & skip meals! Give them 24-48 hours to adjust. Check water quality & offer tempting treats like bloodworms to encourage eating. If issues persist, consider underlying stress or illness.


To conclude, if you are a new betta fish owner and coming across these issues, rest assured that there is a solution, and it’s easy to identify. Firstly, try changing the environment of your tank by adding plants or gravel. Then, make sure it is adequately heated (ideally between 78-82°F). Also, please consider your beta’s day/night cycle, as they tend to be more active at night. And finally, consider providing different foods in various forms, such as live food or frozen food, which can entice them to eat. Considering all these elements will help ensure a healthy lifestyle for your Betta and keep them happy for years to come!

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About Me

I am the founder of, a devoted wife and mother, and an avid fish enthusiast. My aim is to assist fellow fish lovers worldwide in understanding how to properly care for and breed their pet fish.

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