How Long Can Betta Fish Go Without Food?

How Long Can Betta Fish Go Without Food?

How long can betta fish go without food? Betta fish, with their long flowing fins and vibrant, colorful bodies, is perhaps the most famous fish for an animal person to keep around. They are a fairly simple fish to claim and deal with, given you have the legitimate tank arrangement, food, and an opportunity to deal with a pet.

However, things don’t generally go as expected, and some of the time you’ll need to leave your wonderful betta alone for longer than you intended to. What do you do assuming that this occurs, diet-wise? What number of days can bettas go without being taken care of?

Betta fish can go somewhere in the range of 10 and 14 days unfed. However, it’s never actually a good idea to let them be this long for various reasons.

In this way, in other words, you can leave your bettas unfed for around a week and a half to about fourteen days, yet it’s most likely not that good of an idea. Peruse on to figure out why and everything else there is to be aware of how long betta fish can endure with no food.

How Long Can Betta Fish Go Without Food?

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How Long Can Betta Fish Go Without Food?

In spite of the fact that betta fish can survive a surprisingly long time without food, it’s not generally a good idea to count on this information. This is because there are various factors that will determine how long individual bettas can go without eating. Every fish is a tiny bit of touch different all things considered, and various factors will change how long they can go without eating.

Tank Size

In all honesty, the primary factor that will significantly change how long your betta fish can go without food is the size of the tank that it’s in. This is because it’s not just about how long the betta can survive without eating yet additionally about the conditions of the tank that it’s swimming in.

The smaller your tank, the more rapidly the conditions of that tank will rot. This truly intends that despite the fact that your betta will actually want to survive not eating for a brief period, it will still have the issue of living in unfortunate conditions, which might actually be extremely unsafe or even deadly.

On top of this, when a betta is stressed because of unfortunate conditions, its health is severely affected too. This can affect how long it will actually want to go without eating.

Filtered Tank vs. Unfiltered

Another factor that will impact the amount of time a betta can go unattended is in the event that your tank has a filter or not. Unfiltered betta fish tanks need maintenance because of the buildup of food scraps, debris, and other undesirable particles in the tank that can’t get filtered out.

Assuming you are leaving for a week and a half to two weeks, then an unfiltered tank might encounter a huge load of the unwanted buildup of rottenness that a filtered tank wouldn’t. This could severely influence the health of your betta fish, causing it hurt, regardless of its capacity to not eat for a long period of time.

The Health of the Fish

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The overall health of your fish is a third important factor to consider while you’re getting ready to leave your fish unattended for a significant timeframe. Not all bettas are something similar, and this implies that they all have varying amounts of time they can be left unattended, in spite of there being a common rule.

The age, metabolism, overall health, stress levels, and tank conditions will all be factored in while attempting to determine how long you can securely leave your betta fish unfed. More youthful bettas might have the option to deal with the stress of not eating and progressively unfortunate tank conditions better compared to more established fish.

Then again, a more seasoned fish might have enough fat developed to not eat for a longer time frame, as their metabolism will in general be slower than that of more youthful, growing fish.

How Long Can Betta Fish Fry Go Without Food?

You may ponder: if betta fish can go for 10 to 14 days unfed, how long are their fry ready to last unattended? All things considered, the dietary necessities and tank conditions are somewhat unique for betta fish than their betta children, so maybe they can be left unattended for an alternate time span too?

All things considered, you’d be correct. Betta fries are high-maintenance fish and should be in capable hands and observed intently until they arrive at adulthood. Their metabolisms are far quicker than their grown-up counterparts, implying that they ought to be taken care of with a higher frequency to assist them with consuming energy and grow all the more rapidly.

Once they’re swimming (normally around 48 hours from when they hatch), betta fry can go around three days without food at their furthest cutoff. For the initial not many days, they don’t actually need food by any means, as they get nutrients from the egg sack. Thereafter, they for the most part get around three or four little feedings daily, which is practically twofold what a grown-up would get.

Since you can’t leave betta fry unattended for an extremely long period of time, you ought to ponder buying an automatic feeder, especially in the event that you anticipate breeding bettas and dealing with keeping fry very much taken care of and healthy on a regular basis. Portion out dried live food like baby brine shrimp, daphnia, and other appropriate foods in your automatic feeder to be dispensed out while you’re away.

How to Prepare a Betta Fish Tank Before Leaving It for a Few Days

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Regardless of whether you’re inside the appropriate amount of days that your betta fish or betta fry can survive while leaving, it’s anything but a good idea to simply get together and leave your tank how it is.

There are various preparations and precautionary measures you ought to take to prepare your tank for your nonattendance. Peruse on to find out how you want to help your tank and your betta fish before you leave!

Optimize Tank Conditions

The primary thing you’re going to believe that should do prior to leaving is to optimize the water and tank conditions. This will ensure that your Bettas are in a healthy environment while you’re gone.

In the event that you leave with the tank conditions not appropriately set up, it will just deteriorate from that point and power your bettas into investing energy in a tank where the conditions wind up deteriorating to an extremely unhealthy level.

Make sure that your tank’s filter works, clean the debris and food scraps out of the gravel and decorations, check for the legitimate pH (6.5-7.5) and hardness (3-4 dGH), and actually take a look at the gear/equipment and trim the plants and clean the algae.

This will ensure the environment your bettas are in is unblemished so that when you return, it’s just marginally messy rather than totally filthy.

Check Your Heater

Actually, look at your heater to ensure that the bettas will not be investing a lot of energy in water that is some unacceptable temperature. Betta fish are tropical freshwater fish, meaning they like to be in freshwater that is somewhere in the range of 75 and 81 degrees Fahrenheit.

Ensure you have a functioning heater, and it is between these temperatures. Additionally, ensure there is no AC to make the room unnecessarily cold, intensity to make the room unnecessarily warm, and the tank (especially in the event that it’s a smaller tank) isn’t taking sunlight directly. Place the tank a long way from any vents that may be removing hot or cold air.

Cool Down the Water

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Despite the fact that we just went over that betta fish like a piece higher of a temperature, you can use a temperature that is a bit lower assuming you’re anticipating leaving your tank unattended for a longer period, like 10-14 days. A temperature range of 73 to 75 degrees Fahrenheit could really be good for your bettas.

This is because this temperature range will still keep them healthy while slowing their metabolism down a piece to make eating to a lesser extent a necessity. Your bettas will feel less need to move around, and in spite of the fact that they may be a piece slow and languid, it’s superior to them being starving.

Put a Lid on It!

Make a point to put a top on the tank when you go away for an extended period of time. Betta fish feed at the surface, and in all honesty, they frequently get oxygen from up there and use an organ called the labyrinth organ.

Assuming you are gone for some time, the water quality in your tank drops, causing the bettas to go to the surface for air to an ever-increasing extent, and perhaps attempt to jump out of the highest point of the tank!

Ensure there is a top on the tank while you’re gone. You would rather not return home to any bettas outside of the tank all things considered!

Get Timed Lights

To keep your betta fish healthy and their stress levels as low as could really be expected, timed lights are a necessity. Ensure the lights are on for around 8-10 hours every day, permitting your betta to rest around evening time while swimming around the tank and remaining dynamic during the day.

This is the healthiest schedule for your betta, yet it won’t be imaginable in the event that you’re not around and don’t have timed lights.

Keeping your fish healthy and with low-stress levels will be exceptionally useful in ensuring they’re alright while you’re gone, so timed lights are an absolute requirement in the event that you’re anticipating leaving for anything over several days.

Not Feeding Your Betta Fish For a Day or Two Can be Healthy

It’s really not a bad idea to let your betta fish quick for a little while once in some time. They’ll be thoroughly fine, as they are worked to survive rather long periods of time without food, and it will assist with ensuring you’re not overfeeding them. Overfeeding your fish can increase stress levels, decrease metabolism, and damage the overall health of your fish.

However, don’t do this time after time, as you still need to ensure your fish is getting enough food to remain alive and healthy. Going away for weekends is fine, however, the same length as you don’t make a propensity for not feeding your fish every end of the week. Attempt to do this around once every little while as it were.

With betta fish fry, you ought to make an effort not to do this by any means. Their metabolisms are quicker, and they expect food to grow rapidly and accurately, so take a stab at feeding them their standard 3-4 times each day every day if conceivable, so they grow appropriately.

Are Automatic Fish Feeders Good for Your Betta Fish?

Using automatic feeders is fine some of the time, however, it can likewise once in a while lead to overfeeding. Generally, it’s prescribed to simply take care of the bettas by hand so they don’t get overloaded while you are home.

Then again, an automatic fish feeder can be an incredible instrument for betta fish proprietors that like to go on long excursions or leave their fish unattended for something beyond two or three days. It will ensure your fish are still getting the appropriate amount of food regardless of whether you’re not home.

Automatic fish feeders are likewise perfect for fry, who need to eat undeniably more than their grown-up counterparts. Since they like to eat 3-4 times each day at generally even spans, an automatic fish feeder can be perfect for any among us that need to work and won’t be home until the night to take care of our swimming buddies.

FAQ – How Long Can Betta Fish Go Without Food?

Can I Leave My Betta Fish For a Week?

A: Yes, you can leave your betta fish alone for seven days. They are exceptional to survive 10-14 days without food, as long as the tank conditions are incredible when you let them be.

Can a Betta Fish Not Eat for Two Days?

A: Yes, a betta fish can not eat for two days, and this fasting is frequently considered healthy assuming it’s just a single time in some time.

Can a Betta Fish Not Eat for 3 Days?

A: Yes, you can leave your betta fish for three days without any concern; it will be fine.


Betta fish are shockingly versatile fish and are effectively ready to invest energy alone, given their tanks are in good condition. You can leave a betta fish unfed for 10-14 days yet at the same no more. For fry, take a stab at using an automatic feeder, as it is more vital for them to eat, however they can still be left unfed for 2-3 days.

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