Can Koi Fish Eat Bread?

Koi, like any other pet, enjoy treats. They will happily consume anything from fruit to fish. Even though Koi eat anything, some foods will promote health in your Koi and others that could be very dangerous. 

Many goldfish owners feed their fish breadcrumbs. If you have Koi fish, you may be wondering if they can enjoy a special treat of breadcrumbs as well. 

So, can Koi eat bread? 

High-carbohydrate foods should be avoided because they are difficult for Koi to digest and can cause health concerns if consumed too frequently. Peas, corn, and bread are among these foods (especially white bread) and uncooked rice. Bread and uncooked rice will expand in their stomach. For Koi, it is best to stick to fruits, vegetables, and meats, as well as fish food or pellets.

Let us look into which foods are suitable and which are not.

Foods That Your Koi Will Love!

The most enjoyable aspect of raising Koi is feeding them! The best bonding experience for growing Koi and their owners is seeing them come to the surface and even eating from the palm of your hand.

Aside from fish food, what else can I feed my Koi fish? Koi fish can eat more or less anything and have a large appetite. Koi thrive on natural and man-made foods, such as fish pellets.

There are many things you can feed Koi fish, but feeding them a high-quality diet will help them grow faster and healthier.  Vegetables, shrimp, worms, fruits, flakes, and fish pellets are all excellent foods for Koi growth.

Related Read: How Long Can Koi Fish Go Without Food?

Knowing what to feed your Koi fish is equally important as knowing how much to feed them. Feeding time for Koi fish is a fun time, so make sure they are eating foods that provide them with plenty of nutrients.

Natural Foods


Fruit is a healthy treat that you can give to your Koi.  This is a nutritious food that they can enjoy as it can help to relieve stress and enhance their immune system, keeping them healthy. Koi fish, like humans, enjoy a juicy piece of fruit on a hot summer day. Bananas, grapes, orange slices, and watermelon are among their favorite snacks.  

The most difficult part of feeding your Koi fruits is inviting them to try it for the first time.  Remember that it may take your Koi some time to realize that it is food. They may be hesitant to try it at first. When they get the courage to try fruit, however, most Koi enjoy it. Fruits are high in vitamins, which keep them healthy.

Remember to cut up any fruit you have into small edible pieces. 


Koi, believe it or not, enjoy eating greens. As a tasty treat, you can try a variety of vegetables with your Koi. Vegetables can be a nutritious snack for your Koi, so you can feel good about feeding veggies to them. A few of their favorites are garlic, broccoli, and lettuce.

Some vegetables may be tough for Koi to eat. For example, broccoli is best when it is cooked beforehand. This helps to soften it to make it easy to eat.

Garlic is another excellent replacement for fish food, and it can be fed to them raw without being mixed with other foods. Garlic can be added to the Koi’s diet in a variety of ways. The quickest way to provide them with nutrients is to use processed or blended garlic. 

Lettuce and other leafy greens have also been found to be beneficial to Koi fish. Romaine lettuce is a popular vegetable because it is easier to digest and clean from the koi pond. Even though Koi will consume any type of leafy green, it must be shredded and properly cleaned. Romaine lettuce is more nutritious than other types of lettuce.

High Protein and Live Food

Koi fish are omnivores who enjoy the occasional bit of meat. Krill, shrimp, crayfish, and worms are some of the best meaty snacks for Koi. If you offer your Koi one of these delicacies, they will adore you forever. In general, anything they would find in their natural environment. This will be healthy for them, and the Koi will enjoy it as a snack.

You can feed them meat while it is alive to add some excitement, as they will chase the meat. However, you can occasionally feed frozen meats to your Koi. Again, make sure you do not catch the meat yourself or take it from the wild.  You have no idea what bacteria or viruses they might have on them. You don’t want to endanger your Koi.

Koi should have a diet that is high in protein. One of the best sources of protein for Koi is krill. Krill protein is incomplete, which is ideal for Koi, as anything higher than 40% protein is unhealthy for them. Feeding krill to Koi can help improve their colors and growth. Your Koi requires as many nutrients as possible, so krill is a good option if you want to boost its nutrient intake as well as its appearance.

Brine shrimp is a great choice for Koi and other fish species. Brine shrimp is more nutritious than frozen fish food and is ideal for accelerating the growth of newly hatched Koi. This can provide all the nutrients your Koi require at any stage of development, and it also speeds up their metabolism during the summer. Because Koi are omnivores, you must ensure that they get enough protein, and brine shrimp is one of the best foods for this.

Earthworms and mealworms are both easy for Koi to digest, making them an excellent substitute for fish food. Worms are highly nutritious for fish and there are no downsides to feeding this to your fish all year round. Also, look for fresh, active worms. After the first bite, your Koi will quickly grasp the concept. They will be enjoyed as well as benefited by your Koi. 

Other Food Options for Feeding Koi

You can feed your Koi a variety of foods, including fresh foods, freeze-dried foods, and prepared foods. Prepared pellets are designed to meet all of the nutritional needs of Koi.

Prepared foods come in a variety of shapes and sizes. They are also available in floating and sinking varieties. Floating pellets are considered because they allow you to see if your fish are overfed. One of the pleasures of owning Koi is watching your Koi come to the surface to feed.

Wheat germ is a simple replacement for fish food that is not only tasty for Koi but can also help improve digestion and keep ammonia levels low. Wheat germ is an excellent winter food for Koi. Wheat germ is particularly popular with koi because it contains a good amount of vitamin E and is easy to digest. This fish diet must include the six building blocks of fats, protein, carbohydrates, vitamins, minerals, and fiber. Most of these building blocks can be found in wheat germ.

Foods to Avoid Feeding Your Koi

Now that you’ve learned about all of the good food options for your Koi fish, it’s time to discuss what you should avoid.  Carbohydrate-rich foods should be avoided because they are difficult for Koi to digest and can even cause health problems if consumed in excess. 

There are some foods you should avoid feeding your Koi because they are bad for their health. This could be due to the food’s size, toughness, or overall healthiness. Snacks high in carbohydrates, for example, should not be fed to Koi.

Bread, peas, and corn are all included. White bread, in particular, is difficult for Koi to digest, which can lead to health issues over time. This is the last thing you want to happen to your Koi. Starchy foods, such as pasta and rice, can cause digestive blockages. It is best to avoid feeding these kinds of human foods.

You should also resist feeding your Koi any wild fish you’ve caught.  Although it may appear to be a healthy meal for Koi, there is a potential that wild fish and insects may contain parasites. This can contaminate your pond and make your Koi sick. There are many pet stores where you can buy wild fish and insects that are safe for your Koi.

Can Overfeeding Kill Koi?

Yes, Koi, like any other fish species, can die from overfeeding.

This is worsened by the fact that these colorful creatures have no stomach and can become constipated in no time. If not monitored closely, this can lead to serious health complications and, in the end, the death of your fish.

Remember that you should only feed your Koi what they can consume in a few minutes. Everything that is left is excessive, and you should remove such leftover food from the water whenever possible.