How To Know If My Goldfish Is Hungry?

What signs of starvation do goldfish show? How often should you feed your goldfish? Goldfish are voracious eaters and will eat whenever you offer them food, whether or not they are actually hungry. Your ability to determine whether your goldfish is hungry may be clouded by such goldfish behavior.

If you see that your goldfish is aggressive or it appears lethargic or it is swimming on the surface of the water then the goldfish is showing that it is hungry.

So how can I tell if my goldfish need to eat? Check that out below, where I went through when it’s best to feed your goldfish and how to know whether you’ve overfed or underfed them.

How can you tell whether a Goldfish is Hungry?

Here are several indicators that your goldfish is starving.

1. Goldfish will remain at the tank’s top

Remaining at the top of the tank indicates that your goldfish is hungry. Another sign of oxygen deprivation in the tank is your goldfish swimming above the top of the water. Your goldfish is hungry if your aquarium is adequately oxygenated and there are no other tank problems. In aquariums, goldfish stay at the water’s surface at the tank’s apex because they are aware that their owners will feed them from there.

Goldfish will remain at the tank's top

2. Aggression

Goldfish’s calm nature means they do not favor aggressiveness in their aquarium. However, if your goldfish suddenly becomes hostile, they are probably starving. However, there may be a variety of other causes, such as stress and an overcrowded tank, for your goldfish’s violent behavior.


3. Lethargic attitude

Inactivity in your goldfish is another sign that it’s hungry. Your goldfish may also become lethargic due to hunger, as food gives them the energy to stay active and swim comfortably.

Lethargic attitude

4. Goldfish sifting through the soil

If you notice your goldfish digging in the substrate of the tank, they are likely hungry. Your goldfish will delve into the substrate of the tank in quest of food if they are dissatisfied with the amount you have given them.

Goldfish sifting through the soil

If your goldfish are hungry, they can also nibble on the water vegetation.

How can I tell if my Goldfish are being underfed?

All of the aforementioned indications of your goldfish being hungry point to underfeeding. In their natural habitat, your goldfish do not have access to food daily since they can only eat food they have independently caught.

Goldfish are being underfed

However, when kept in captivity, you must regularly provide your goldfish food so they form the habit of doing so. When you don’t provide your goldfish with their usual food supply, they get hungry and stay at the top of the tank.

How can I tell if my Goldfish is being fed too much?

Overfeeding your goldfish might result in situations that endanger its life.

Your goldfish may pant for air at the top of the water’s surface in the tank if the oxygen content in the water is further reduced by contaminated water.

Goldfish is being fed too much

Overfeeding might result in leftovers in the tank, contaminating the water in the tank. As a result of ammonia surges caused by leftovers in the tank, your goldfish may get illnesses such as swim bladder disease.

Constipation in your goldfish is another sign that you’ve overfed them. Your goldfish’s stomach will get huge and stop eating if it is constipated. Constipation can cause a swim bladder issue in your goldfish.

When should I give my Goldfish Food?

The voracious eaters known as goldfish will consume whatever you give them. However, overfeeding your goldfish might result in serious health problems, including constipation. To avoid overfeeding, you should never share your goldfish more food than what they can consume in less than two minutes.

When should I give my Goldfish food

For your goldfish’s average growth and development, please avoid overfeeding them. It would be ideal for feeding your goldfish in moderation two to three times daily. You may also establish a feeding plan for goldfish, which will help them establish a regular eating routine and support their digestive system. For more information, you can see this article Goldfish eat cheese.

Pick Healthy Foods

Experts can agree that no one meal kind is the best for feeding fish. The ideal approach to feeding your fish is to provide her with a choice of alternatives since this is the method that most closely resembles her natural feeding habits. For the most part, fish flakes that give an adequate diet should be the primary source of food, coupled with frozen items once or twice a week. You can always see your veterinarian to find out what is advised. Consider feeding your fish sinking pellet food, which is a great option for bottom feeders like goldfish.


Goldfish naturally eat a lot. No matter how often you feed them, they will always eat as though they had been famished. However, it is your responsibility to determine whether they are actually hungry because overfeeding them might have adverse health effects. However, this does not imply that you starve your goldfish to prevent any health issues. Set the time when they will eat. It will enable you to monitor their feeding time properly.

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