Do Betta Fish Float When They Die: Signs, Treatment, and When to Worry

Betta fish are tropical fish that are popular in home aquariums. They typically live in small groups and are known for their colorful fins and gills. Betta fish can live up to five years, but they are susceptible to dying from a number of causes, including disease, parasites, and accidents.

When a betta fish dies, it typically does not float right away to the surface of the water, hence, it sinks most of the time. It’s important to note that betta fish do not always float when they die; some may sink to the bottom or remain motionless on the surface.

How to Tell if Your Betta Fish Is Dying?

When a betta fish dies, it typically sinks to the bottom of the tank. If the fish is healthy and eating well, it may float on the surface for a short time before sinking. If the fish is not eating or appears to be in pain, it may float for a longer period of time before sinking.


Betta fish can exhibit lethargy, which is a sign that they are not well. Lethargy may be accompanied by restlessness and decreased activity. If the betta is unable to generate enough energy to swim or eat, it may need medical attention.

Less Swimming

If a betta’s swimming habits have decreased markedly, it may be time for him or her to retire. If your betta is no longer able to swim vigorously and easily, it may be suffering from disease or an injury.

Decrease in Appetite

Another common sign of illness or injury in a betta fish is a decline in appetite. If your betta doesn’t seem to be eating as much as usual, it may be worth taking him or her to the veterinarian for an evaluation.

Losing Colors

Betta fish typically have a bright coloration, but as they age, their colors may fade. This is generally due to a decrease in the level of hormones that are responsible for coloring the fish’s body. Some bettas may also develop tumors which can cause them to lose color. In any case, if you notice that your betta’s colors are fading or changing in any way, it is important to take him to a veterinarian for an evaluation.

Common Reasons for Betta Fish Deaths

Betta fish are generally easy to care for, but they can die from a number of causes. Some common reasons for betta fish deaths include the following:

Water Issues

Betta fish are common in many aquariums, but some water conditions can be problematic for them. For example, if the water is too acidic or basic, bettas may not be able to swim or breathe. Additionally, if the water temperature is too high or low, bettas may also suffer. If you notice any of these problems with your betta fish, it’s important to take action to correct the condition as soon as possible.


Betta fish are hungry animals, and they can be tempted to eat too much. Overfeeding can lead to obesity and health problems in other parts of the fish’s body, but it also has the potential to kill a betta fish. Bettas should only be fed once or twice per day; if they’re being fed more frequently, they may start to exhibit predatory behaviors and become aggressive towards their tankmates.


Stress can be a major cause of betta fish deaths. Bettas may die from injuries or illness, but they also often kill themselves by struggling in an attempt to escape something harmful (such as a predator). If you notice that your bettas are stressed or behaving strangely, it’s important to take action immediately.


Betta fish can be injured in a variety of ways. For example, they may get caught in a net or snag on the substrate in their tank. If this occurs, it’s important to free the betta as soon as possible and provide supportive care (such as water temperature changes and medication for distressed fish). In some cases, surgery may be required to save the betta’s life.


Betta fish are social animals, and they thrive when they have plenty of space to swim and hide. If there’s too much water in the tank or too many other fish present, bettas may not be able to survive. They may start losing weight or showing signs of stress (such as drooping fins). In extreme cases, a betta fish might even die from oxygen deprivation.

Do Betta Fish Die Easily?

Betta fish are a popular pet fish and many people keep them in their homes. Bettas are generally considered to be hardy fish and they can usually survive in most environments, but there are some things that can kill them. Bettas can die from a number of different causes, including water temperature changes, overfeeding, disease, and being caught in a net.

Blue Beta Siamese Fighting fish with black background

What Happens When Betta Fish Die?

If your betta fish dies, there are a few things that you can do to help the fish’s body. You may want to prepare an area in your home for the fish’s cremation (this is optional). After the death, it’s important to remove any excess water and debris from the tank so that decomposition can take place. Finally, don’t forget to clean out all of the equipment used in your aquarium – this will keep any other infected fish from spreading the disease to your tank.

How to Prolong the Lifespan of Your Betta Fish?

Prevention is the best cure when it comes to keeping your betta fish healthy. Make sure to provide them with a healthy diet and clean water, and keep their tank clean to avoid introducing harmful bacteria. If your betta fish does become sick, make sure to get them treated as soon as possible so they can recover quickly.

Stabilize Water Parameters

Betta fish are tropical fish that require warm water with a pH level of 6.5-8. To ensure the health and well-being of your betta fish, it is important to regularly check the water parameters and correct any changes if necessary.

Medicate Illnesses

If your betta fish becomes ill, be sure to give them medication as prescribed by their veterinarian. Some common illnesses that can be treated with antibiotics include constipation, parasitic infections, and fungal diseases.

Seek Professional Help

If you are not sure if your betta fish is sick or dead, then it is best to get them checked out by a certified fish specialist. This will help you determine the cause of their illness and whether they need any treatment.

Is Your Betta Fish Sleeping or Dead?

Betta fish are active when they are swimming around and eating, but they will often rest on the bottom of their tank when they are not actively swimming. When a betta fish is resting, it will often sink to the bottom of the tank and may stay there for several hours. When the betta is sleeping, its body will be slightly curved and its eyes will be closed. Also check the water temperature, if it’s below 76 degrees Fahrenheit (24 degrees Celsius), your betta is probably sleeping.

When a betta fish dies, it will often sink to the bottom of the tank and remain stationary for days. If the fish is truly dead, its body will float and its eyes will be open. In addition, living betta fish will emit bubbles from their gills, if not, that is an indicator that one has passed away.