What Can Live With Hermit Crabs? Best Companions

What Can Live With Hermit Crabs? Best Companions

Are you a hermit crab enthusiast looking to create the perfect habitat for your adorable crustacean friends? One important aspect of keeping hermit crabs is ensuring they have suitable tank mates. In this blog post, we will explore the best companions for hermit crabs, how to create a comfortable environment for them, and tips on their care and feeding. Join us as we dive into the fascinating world of these unique creatures!

Choosing the Right Tank Mates

Choosing the right tank mates for your hermit crabs is crucial to create a harmonious and thriving aquatic environment. When it comes to fish, opt for peaceful species like tetras or guppies that won’t harass or harm your hermit crabs. Snails can also make excellent companions as they help clean up leftover food and algae in the tank without posing any threat to your crustacean friends. Additionally, consider adding shrimp to your tank as they are generally compatible with hermit crabs and provide an interesting dynamic to the ecosystem.

Compatible Species

Understanding Hermit Crab Behavior is crucial when choosing tank mates. Hermit crabs are generally peaceful creatures that spend most of their time scavenging for food and exploring their surroundings. Creating a Suitable Environment for Tank Mates involves providing enough hiding places, such as rocks or caves, to ensure each species has its own space. Additionally, it is important to choose Companions with Similar Environmental Needs, including water temperature and pH levels.

  • Tank mates should be peaceful and not aggressive towards hermit crabs.
  • Species that do well in similar temperature and pH conditions are ideal companions.
  • Avoid fish species that may nip at the delicate appendages of hermit crabs.


Best Fish Species for Hermit Crab Tanks: When choosing fish companions for your hermit crabs, it is important to consider their size and compatibility. Opt for small-sized species like guppies or tetras as they are less likely to harm or intimidate the crabs. Avoid aggressive or territorial fish that may pose a threat.

Size Considerations and Compatibility with Hermit Crabs: Ensure that the chosen fish species will not outgrow the tank, as space limitations can cause stress and aggression among tank inhabitants. Additionally, select peaceful community fish that won’t harass or prey on the hermit crabs. This will create a harmonious environment conducive to all inhabitants’ well-being.

Maintaining Water Quality and Proper Filtration: To provide an optimal habitat for both hermit crabs and fish, proper water quality maintenance is crucial. Invest in a reliable filtration system suitable for your tank size to maintain good water parameters such as pH levels, ammonia levels, nitrate levels, etc. Regular testing of water parameters should be performed along with routine cleaning of filters to ensure excellent living conditions within the aquarium environment.


Snails make excellent tank mates for hermit crabs due to their numerous benefits. They help with cleaning the tank by consuming leftover food and algae, reducing maintenance needs. Additionally, certain types of snails coexist well with hermit crabs, ensuring a harmonious environment in the tank. It is important to provide adequate sources of calcium in the habitat for both snails and hermit crabs to support their shell growth and overall health.

Benefits of Keeping Snails as Tank Mates for Hermit Crabs:

  • Assist in cleaning the tank by consuming leftover food and algae.
  • Reduce maintenance needs.

Types of Snails that Coexist Well with Hermit Crabs:

  • Nerite snail.
  • Mystery or apple snail.

Providing Adequate Calcium Sources in the Habitat:

  • Crushed coral substrate.
  • Cuttlebone supplementation.


Different varieties of shrimp can make excellent companions for hermit crabs. When choosing shrimp species to coexist with hermit crabs, it’s important to consider their compatibility and ensure there are enough hiding spots and territory allocation for both species. Balancing water parameters is also crucial in creating an environment that accommodates both the shrimp and hermit crabs, ensuring their well-being. By selecting compatible shrimp varieties, providing sufficient hiding spots, and maintaining balanced water conditions, you can create a harmonious habitat where these two aquatic creatures thrive together.

Creating a Suitable Habitat

When considering tank companions for hermit crabs, it is important to choose species that have similar environmental requirements. Small fish like mollies and guppies can coexist with hermit crabs, as they inhabit different water levels in the tank. Snails are also compatible as they help keep the tank clean by consuming algae and leftover food particles. However, larger fish or aggressive species should be avoided as they may harm or stress out the hermit crabs.

To ensure a suitable habitat, provide adequate hiding places within the tank. This can be achieved by incorporating rocks, driftwood, and artificial plants into the setup. These hiding spots not only offer shelter for your hermit crabs but also create a more natural-looking environment. Additionally, maintaining proper water quality through regular cleaning and filtration is crucial for both the well-being of your hermit crabs and their potential tank mates.

Proper Tank Setup

Tank Size and Materials: When setting up a tank for hermit crabs, it is important to provide them with enough space to move around and explore. A tank size of at least 20 gallons is recommended for one or two hermit crabs. Additionally, choose a tank made of glass or plastic that is sturdy and can hold water without leaking.

Temperature and Humidity Control: Hermit crabs thrive in warm and humid environments, so it’s crucial to maintain the right temperature and humidity levels in their tank. Keep the temperature between 75°F (24°C) and 85°F (29°C), using a reliable thermometer to monitor it closely. Maintain humidity by spraying the enclosure with dechlorinated water daily or using an air humidifier.

Substrate Selection: Choosing the right substrate for your hermit crab’s habitat is essential for their well-being. Opt for natural materials like coconut fiber or sand mixed with calcium-rich products such as crushed coral or oyster shell fragments. This will help create a suitable substrate that mimics their natural environment while also providing necessary minerals for exoskeleton growth.

  • Tank size should be at least 20 gallons.
  • Use glass or plastic tanks.
  • Maintain temperature between 75°F85°F.
  • Monitor temperature closely with a thermometer.
  • Keep humidity levels high by spraying daily.
  • Choose natural substrates like coconut fiber or sand.
  • Mix in calcium-rich products like crushed coral.

Maintaining Water Quality

Filtration systems are essential for maintaining water quality in your hermit crab tank. They help remove harmful substances and debris, keeping the water clean and safe for your pets to thrive. Regularly monitoring water parameters such as pH, ammonia levels, and temperature is crucial in ensuring a healthy environment for your hermit crabs. Additionally, performing regular water changes helps to eliminate accumulated waste and refreshes the tank’s ecosystem.

Providing Hiding Places

Natural hideouts, such as caves and rocks, are essential for hermit crabs to feel secure in their habitat. These natural hiding places mimic the crabs’ natural environment and provide a sense of safety. Incorporating these elements into the tank will create an ideal space for your hermit crab companions.

When choosing decorations for your hermit crab tank, opt for “hermit crab-safe” options. This means selecting items that do not contain any harmful chemicals or toxins that could harm the crabs. By providing safe decorations, you ensure a comfortable and healthy environment for your hermit crabs.

It is crucial to have adequate space in the tank to accommodate multiple hermit crabs. Each crab needs its own hiding place to establish territories and reduce stress levels. Having enough hiding spots will promote harmonious cohabitation among the various inhabitants of your tank.

As we continue our exploration on what can live with hermit crabs, creating hiding places offers a nurturing environment while ensuring compatibility within their habitat.

Care and Feeding

Feeding Hermit Crabs:

When it comes to feeding hermit crabs, a varied diet is essential for their health and well-being. Offer them a mix of fresh fruits, vegetables, and high-quality commercial crab food. Additionally, provide calcium-rich sources like cuttlebone or crushed eggshells to support their exoskeleton development.

Feeding Tank Mates:

While hermit crabs are generally peaceful creatures, not all tank mates make suitable companions. Avoid keeping aggressive fish or those that may nip at the crabs’ sensitive antennae. Instead, opt for peaceful species such as small snails or shrimp that won’t compete for resources or pose any harm to your hermit crab friends in the shared habitat.

Feeding Hermit Crabs

Best Foods for Hermit Crabs include fresh fruits, vegetables, and high-quality commercial hermit crab food. Offer a variety of options to ensure balanced nutrition.

Establishing a Proper Feeding Schedule for Hermit Crabs is crucial. Feed them small amounts daily or every other day, removing any uneaten food promptly to prevent spoilage.

Supplements and Treats for Hermit Crabs can enhance their diet. Calcium supplements help with shell growth while occasional treats like dried shrimp or mealworms provide added enrichment. Always remember to offer clean freshwater as well!

Feeding Tank Mates

Choosing tank mates with similar dietary requirements is crucial for the overall health and well-being of your hermit crabs. Opt for species that have compatible feeding habits, such as other crustaceans or bottom-dwelling fish, to ensure they can share the same type of food without any conflicts. Avoid overcrowding in the tank as it can disrupt proper feeding habits and lead to competition for resources. Additionally, when introducing different types of tank mates, consider their specific dietary needs and provide a varied diet accordingly to meet everyone’s nutritional requirements.

Monitoring and Observing

Observing behavior is crucial when determining suitable tankmates for hermit crabs. It is best to avoid aggressive or territorial species as they may harm the hermit crabs. Instead, opt for peaceful fish like small gobies or blennies that can coexist harmoniously.

Regular tank maintenance ensures a healthy environment for both hermit crabs and their companions. This includes monitoring water parameters, keeping the tank clean, and providing proper nutrition. By maintaining optimal conditions, you can create a thriving ecosystem where different species can live together peacefully.

Regular Tank Maintenance

Proper temperature and humidity levels are crucial for maintaining a healthy tank environment. Hermit crabs thrive in temperatures between 75-85°F and humidity levels of 70-80%. Regularly monitor these factors using a thermometer and hygrometer to ensure optimal conditions.

Cleaning the tank regularly is essential to prevent the build-up of waste, bacteria, and ammonia that can harm hermit crabs. Remove any uneaten food, debris, or molted exoskeletons promptly. Clean the tank surfaces with a mild vinegar solution weekly and replace substrate every few months.

Provide fresh water daily in a shallow dish for drinking as well as soaking. Use dechlorinated water or marine-grade saltwater suitable for hermit crabs. Additionally, offer nutritious food such as commercially available crab pellets, fresh fruits, vegetables, and occasional protein sources like fish flakes or insects.

Observing Behavior

Understanding normal hermit crab behavior is essential for maintaining a healthy tank environment. By observing their behavior, you can gain insights into their well-being and ensure they are thriving in their habitat. Some key behaviors to monitor include molting, exploring, and feeding.

Identifying signs of stress or illness in hermit crabs is crucial for early detection and prompt intervention. Look out for abnormal shell changes, lethargy, loss of appetite, unusual odor, or excessive hiding. These indicators can help you take appropriate measures to address any health concerns promptly.

Monitoring interactions between your hermit crabs and their tank mates is important to prevent any aggressive behavior or conflicts within the tank ecosystem. Pay attention to how they interact during feeding time or when occupying shared spaces such as hiding spots or climbing structures. Ensuring harmonious coexistence promotes a better quality of life for all inhabitants in your tank.

  • Molting
  • Exploring
  • Feeding
  • Abnormal shell changes
  • Lethargy
  • Loss of appetite
  • Unusual odor
  • What other creatures can make good tankmates for hermit crabs?

If you’re considering adding some tankmates for your hermit crabs, it’s essential to choose compatible creatures that can coexist peacefully and thrive in similar environmental conditions. Here are a few options to consider:

1. Snails: Snails are excellent tankmates for hermit crabs as they both have similar habitat requirements. They help to keep the tank clean by consuming algae and leftover food, which can contribute to a healthier environment for your crabs.

2. Fish: Some small, peaceful fish species can coexist with hermit crabs. It’s important to choose fish that won’t harm or stress the crabs. Species like guppies, mollies, and small tetras can be suitable tankmates. Ensure that the fish are not aggressive or known to nip at the crabs’ appendages.

3. Shrimp: Certain species of small, peaceful shrimp, such as cherry shrimp or ghost shrimp, can make good tankmates for hermit crabs. However, always monitor their interaction to ensure the shrimp are not harassed or injured by the crabs.

4. Live Plants: Adding live plants to your hermit crab tank not only enhances the aesthetic appeal but also provides hiding places and enrichment for your crabs. Plants like Java Moss, Anubias, or Marimo Moss Balls are great options as they are hardy and can tolerate a wide range of water parameters.

5. Isopods: Isopods, commonly known as “roly-polies” or pill bugs, can be great tankmates for hermit crabs. They help clean up waste and decaying matter in the tank, contributing to a healthier environment. Isopods also provide additional enrichment for your hermit crabs as they can be used as a food source or as natural prey items for your crabs to hunt.

6. Coral: If you have a saltwater tank, certain types of coral can make good tankmates for hermit crabs. Coral provides additional hiding spots and adds to the natural beauty of the tank. However, it’s important to research the specific requirements and compatibility of the coral species you choose to ensure a successful cohabitation.

Remember, when introducing new tankmates, always monitor their interactions closely. If you notice any signs of aggression, stress, or compatibility issues, it may be necessary to separate the animals to prevent harm. Additionally, make sure to provide adequate space, hiding spots, and resources for all inhabitants to thrive.

In conclusion, choosing compatible tankmates for your hermit crabs can promote a harmonious and thriving tank ecosystem. Snails, fish, shrimp, live plants, isopods, and coral are all potential options to consider. However, always research the specific requirements and compatibility of any potential tankmates before introducing them to your hermit crab tank. By carefully selecting and monitoring tankmates, you can create a healthy and enriching environment for your hermit crabs.


In conclusion, when choosing appropriate tank mates for hermit crabs, it is crucial to consider their compatibility in terms of size and temperament. Introducing companions to a hermit crab habitat requires careful attention to ensure the safety and well-being of all inhabitants. Creating a harmonious environment for your hermit crabs involves providing adequate hiding spots, maintaining proper humidity levels, and offering a varied diet to meet their specific needs. By following these guidelines, you can foster a thriving community within your hermit crab habitat while ensuring the overall health and happiness of your crustacean friends.