Can hermit crabs eat flax seeds?

An Introduction to Hermit Crab Nutrition

Hermit crabs are fascinating creatures that can make unique and entertaining pets. With their distinct appearance and curious behavior, they captivate owners all over the world. Proper nutrition is essential to maintain their well-being and ensure their health. One of the questions that many hermit crab owners have is whether or not hermit crabs can eat flax seeds. In this blog post, we will explore the dietary needs of hermit crabs and discuss if flax seeds can be part of their daily meals.

Understanding the Hermit Crab Diet

Hermit crabs are omnivorous scavengers, meaning they eat a little bit of everything – from animal protein to plant-based, and even decaying matter. In the wild, they forage for food along the shoreline and forest floors, consuming a varied diet that includes algae, fruits, vegetables, and small insects.

As pet owners, it's our responsibility to mimic this diverse diet for our hermit crabs in captivity. Providing a variety of foods not only caters to their nutritional needs but also brings enrichment to their environment.

Proteins, Vitamins, and Minerals

When it comes to feeding hermit crabs, their diet should consist of a balance of animal proteins, plant-based foods, and calcium-rich substrates. Animal proteins can come from sources such as freeze-dried shrimp, plankton, or small pieces of cooked, unseasoned chicken. Plant-based foods can include fruits and vegetables like apples, bananas, grapes, and leafy greens.

Hermit crabs also require a good source of calcium to maintain their exoskeleton and overall health. This can be achieved by offering them calcium-rich foods like cuttlebone or even crushed eggshells.

Commercial Foods and Dietary Supplements

In addition to fresh foods, there are commercial hermit crab diets available in pet stores that can provide a balanced diet. However, it's important to check the ingredients and opt for a natural, preservative-free brand.

It's also imperative to supplement their diet with vitamins and minerals, ensuring their nutritional needs are met. Just like any other pet, hermit crabs can suffer from malnutrition if not given a well-rounded diet.

Can Hermit Crabs Eat Flax Seeds?

Now let's answer the main question – can hermit crabs eat flax seeds? Flax seeds are known for their nutritional benefits, including being a rich source of omega-3 fatty acids, fiber, and essential minerals.

In small quantities, flax seeds can be a good addition to your hermit crab's diet. However, they should be ground up and given sparingly, as the seeds could pose a choking hazard or become an impaction risk if fed whole and in large amounts.


As hermit crab owners, it's important to provide a diverse and balanced diet to ensure the health and well-being of our pets. Flax seeds, when ground up and given in moderation, can be a healthy addition to their nutrition plan. Remember to always offer a variety of foods, including proteins, plant-based options, and calcium-rich items, to keep your hermit crab happy and healthy.

Can Hermit Crabs Eat Seeds?

Absolutely! Hermit crabs can enjoy a variety of seeds in their diet. Some seeds that can be fed to hermit crabs include chia seeds, pumpkin seeds, and sesame seeds. It's essential to serve them unsalted and without any additives, as too much salt or other chemicals could be harmful to the hermit crabs.

What Other Foods Can They Eat?

Hermit crabs can enjoy a diverse diet of fresh fruits and vegetables, unsweetened dried fruits, and unsalted nuts. Examples of suitable foods include goji berries, mango, pineapple, raisins, coconut, walnuts, pistachios, and almonds. It's always a good idea to introduce new food items gradually, in small amounts, and see how your hermit crabs react to them.

Can Hermit Crabs Eat Granola Mix or Nutritional Yeast Flakes?

Yes, hermit crabs can eat granola mixes and nutritional yeast flakes. These items can provide hermit crabs with essential nutrients and add variety to their diet. When choosing granola mixes for your hermit crab, make sure they don't contain any additives (like sugar or salt) that can be harmful to the crabs. Nutritional yeast flakes, meanwhile, provide an excellent source of vitamins and minerals to help maintain the health of your hermit crabs.

Should Hermit Crabs Be Given Fresh or Dried Foods?

Both fresh and dried foods can be a part of a hermit crab's diet. Fresh fruits and vegetables provide essential nutrients, while dried fruits and seeds can be nutritious and delicious treats. It's essential to remove any uneaten fresh food after a day to prevent spoilage and maintain a clean environment for your hermit crabs. Dried foods can be kept in the tank longer, as they don't spoil as quickly.

What Foods Should Be Avoided for Hermit Crabs?

There are some foods and ingredients that are harmful or toxic to hermit crabs, and you should avoid feeding them these items. These include chocolate, caffeine, alcohol, onions, garlic, and any foods containing high amounts of salt or artificial preservatives. To ensure the health and well-being of your hermit crabs, it's best to provide them with a balanced diet consisting of natural, fresh, and unprocessed foods.