How long can fish go without food? (7 facts)

We will answer the question, How long can fish go without food? In this article. We will talk about the basic nutrient requirements of fish as well as some of the most common pet fish and talk about how long can they go without eating anything. So, let’s dive into the discussion.

How long can fish go without food?

Fish can go without food from days to weeks, depending upon the feeding requirements of the fish and different fish types. Following are some fish and period they can live without food:

  • Tetras can live up to 10 days
  • Guppies can live up to 7 to 10 days 
  • Goldfish can go without food for 10 days.
  • Betta fish can live without food for almost 2 weeks
  • Koi fish can live up to 2 weeks
  • Oscars can live up to 14 days
  • Tigerfish can go up to 3 days to 7 days without any food.
  • Plecos can survive up to 14 days 

It is dangerous to leave the fish without feeding it. Feeding fish is a vital duty that must be performed by the owner. It is against animal welfare rights to make the fish suffer from hunger and starvation. 

Many fish are carnivores and require a high protein and energy-rich diet. Therefore, leaving the fish without food for several days can mess up their health and can cause serious health complications in the fish. Let’s talk about the mentioned fish one by one and

How long can a Goldfish go without food?

A goldfish can go without food for up to 10 days but it should be avoided as much as possible. The delicate digestive and body systems of the Goldfish require energy and nutrients to perform well. Hunger can lead to starvation and once the starvation kicks in, it can lead to multiple myopathies and wasting diseases as well.

Vit E and Selenium are very important for the Goldfish, nutritional deficiency of these chemicals can lead to degenerative disorders of the muscle leading to emaciation and debilitation in goldfish. Therefore, keep your goldfish healthy and free from hunger.

Goldfish can eat tropical fish food as it requires all the essential nutrients that it needs. But keep in mind that special feed for goldfish is available in the market that is why you should not take any kind of risk in the health of your goldfish and don’t leave it hungry for days.

How long can tigerfish go without food?

Tigerfish can go up to 3 days to 7 days without any food. Tigerfish is purely carnivore and feeds on small aquatic animals. It can not survive on plants, corals, or algae. Therefore maintaining ideal feed conditions for tigerfish is very crucial.

Tigerfish eat small worms, fish, or shrimps found in marine life. They have fine sharp razor-like teeth that help them being the most famous predators among their own category of fish. Therefore they require high energy and protein-rich food.

Tigerfish are not picky eaters, they can eat anything until it’s complete carnivores friendly. They become weak if they don’t get the required amount of animal protein and energy. Proper feeding prevents the triggerfish from getting different diseases such as fin rot or tuberculosis etc.

Small chunks of chicken, worms, or frozen meat are the best diet for tigerfish. Tigerfish are an extremely competitive and voracious eater. Therefore the feeding requirements of tigerfish should be fulfilled ideally.

Juvenile tiger fish need continuous feeding therefore they should be fed continuously in their growing periods. Tigerfish does not eat a simple flake diet and must be given food from animal sources to maintain the normal body metabolism of the tigerfish.

How long can tetras go without food?

Tetras can live up to 10 days without food. The feeding requirements of tetras are not hard to manage or handle. They can easily eat any kind of feed, they can eat common fresh vegetables such as cucumber and carrots, as well as some of the fruits.

It should be kept in mind that like all other small fish, the lining of the epithelium of the GI tract of tetras is easily prone to severe conditions like starvation and overfeeding, therefore they should be treated with proper care and management. Continuous swimming and movements underwater require a continuous source of energy that comes from at least twice a day of feed.

Wild conditions are hard and that is why fish don’t live longer and die sooner in wild conditions. While in captivity as there is no food competition, fish can survive easily and for longer periods. You can use automatic feeders in case of serious emergencies, but these feeders often come with a lot of complications and can contaminate your water tank as well.

How long can a betta fish go without food?

Betta fish can go up to 2 weeks max without food. But in about 6 to 7 days it goes into starvation mode which can be dangerous for the betta fish. We know that it is a pervasive question for the pet owners how their pets will survive when they won’t be at home taking care of them.

It should be kept in mind that it is against special animal welfare rights to not feed the fish for more than one day. Fish are sensitive animals and they require continuous energy to survive in the water. The continuous movements in the water require continuous energy that comes from the feed that is why betta fish need regular feeding for their normal body functioning.

Betta fish are voracious just like other carnivore fish but it depends upon youtube to manage the feeding schedule of betta fish and keep it healthy and free from any kind of pain, disease, discomfort, or hunger.

How long can Guppies go without food?

Guppies can live up to 7 to 10 days. Guppies can almost eat everything, they can even eat human food. But it should be kept in mind that even the guppies can eat everything, you need to supply energy-rich and high-protein content food for the fish.

Guppies should be fed properly, even though they can eat anything it is best to feed guppies with a high-energy diet. Until the feeding conditions are not proper the guppies won’t go for breeding. 

The swimming and continuous movement in the water requires energy that comes from food. If you are keeping your guppies in a pond, aquarium, or tank that means now they depend upon you for proper feeding. So, if you want your guppies to breed properly, you need to feed them properly first.

How long can Koi fish go without food?

Koi fish can live up to 2 weeks. But it should be kept in mind that koi fish require a high-energy diet to thrive well. Therefore proper feeding should be taken care of in Koi fish care. A proper feeding schedule is also very important to keep in the case of koi fish.

Koi fish can eat almost anything. They are omnivores and can eat almost everything such as green vegetables, leaves, fruits, or chunks of chicken and meat. They can even eat shrimps and worms. The omnivore’s nature of the Koi fish makes them easy to keep.

Overfeeding of koi fish can lead to problems like constipation or improper digestion. Koi fish requires almost four meals a day, but the feeding should be for 5 minutes only, more than that can cause complications such as constipation and bloat.

How to keep fish healthy and alive?

It is very important to keep your fish healthy and alive. Following are some tips that can help you keep your fish healthy and alive:

Suitable Hygenic Measures

It is crucial to keep the environment of the fish clean and hygienic. Unsanitary conditions can lead to unwanted consequences. Clean the water regularly and change it at regular intervals. Unhygienic conditions in the fish tank can lead to dangerous diseases like mouth fungus, viral or bacterial diseases like tuberculosis or fin rot, etc.

Proper feeding of the Fish 

You need to feed your fish properly to keep it healthy and alive. Management of fish is important. Feed your fish regularly and also keep in your mind that overfeeding can also lead to serious complications. Even though fish can go for almost weeks without food, it is not healthy for them.

Similarly overfeeding, more than twice a day, can lead to bloating or constipation and compromise the health of various fish. Therefore take good care of proper feeding of fish to sustain a good quality of life and longer span.

Conclusion

We answered the question, How long can fish go without food? In this article. We also talked about the basic nutrient requirements of fish as well as some of the most common pet fish and talked about how long can they go without eating anything.

Feel free to ask anything about How long can fish go without food? In the comment section below:

FAQs How long can fish go without food

Frequently asked questions about How long can fish go without food are:

Can fish survive without food for a week?

Yews fish can go without food for a week, depending upon the feeding requirements of the fish and different fish types. Following are some fish and period they can live without food:

  • Tetras can live up to 10 days
  • Guppies can live up to 7 to 10 days 
  • Goldfish can go without food for 10 days.
  • Betta fish can live without food for almost 2 weeks
  • Koi fish can live up to 2 weeks

How long does it take for a betta fish to starve to death?

It takes 2 weeks for a betta fish to starve to death. It should be kept in mind that it is against special animal welfare rights to not feed the fish for more than one day. Fish are sensitive animals and they require continuous energy to survive in the water. 

Can I leave my fish for 3 days?

Yes, you can leave your fish for 3 days. Make sure all the conditions are suitable, the water is clean, the feeding is being taken care of by a friend or an automatic feeder. Fish can survive without food for up to weeks but it is against the animal welfare rights to put the fish in a situation like this.

What can betta fish eat of human food?

It depends on the type of fish. If the fish is a herbivore it can eat vegetables or fruits. If the fish is a carnivore it can eat chicken or meat.

How often should you feed fish?

You can feed your fish one to two times a day. Proper feeding is crucial in fish, overfeeding can lead to serious health complications such as drops and constipation.

References:

https://aquanswers.com/how-long-can-fish-go-without-food-chart/

https://aquariumsphere.com/how-long-can-fish-go-without-food-in-an-aquarium/

Hi, I am Martin, I am a pet lover! I own a Golden retriever and a Long-eared Owl. They keep me company & I often had questions about them which I couldn't find answers for online. I put this hub together for people like me & you.

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