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Care Guide: Armadillidium Isopod

Armadillidiid Care Guide: The Fascinating World of Isopods

Welcome to the captivating world of Armadillidiids! These curious little creatures, commonly known as pillbugs or roly-polies, are fascinating invertebrates that make for unique and low-maintenance pets. Whether you're a seasoned isopod enthusiast or a beginner looking to explore the wonders of these adorable critters, this care guide will provide you with everything you need to know to ensure a thriving isopod colony. So, let's dive into the marvelous realm of Armadillidiids!

1. Introduction to Armadillidiids

Armadillidiids belong to the family Armadillidiidae and are native to Europe but can now be found in various parts of the world due to human activities. They have a distinct oval-shaped body, segmented exoskeleton, and a flexible outer layer that allows them to roll up into a defensive ball. These isopods are renowned for their ability to help break down organic matter, making them valuable decomposers in the ecosystem.

2. Setting up the Perfect Isopod Habitat

Creating a suitable habitat for your Armadillidiids is crucial for their overall well-being. Start by selecting an enclosure that is spacious, well-ventilated, and escape-proof. Glass terrariums or plastic containers with secure lids are excellent choices. Next, provide a substrate layer that retains moisture while allowing for proper drainage. A mix of coconut coir, sphagnum moss, and leaf litter works well. Ensure a humidity level of around 70-80% by misting the enclosure regularly. Optimal temperature ranges between 70-80°F (21-27°C), mimicking their native environment.

3. Feeding Your Armadillidiids

Armadillidiids are detritivores, meaning they primarily consume decaying organic matter. Provide a varied diet consisting of leaf litter, rotten wood, fruits, vegetables, and occasional protein sources like fish flakes or shrimp pellets. Be sure to remove uneaten food promptly to prevent mold or bacterial growth. Additionally, offering calcium-rich supplements like cuttlefish bone or eggshells promotes healthy molting and shell development.

4. Reproduction and Colony Care

Armadillidiids exhibit interesting reproductive behavior. They are dioecious, meaning there are separate male and female isopods. During courtship, the male initiates a mating process by depositing sperm packets on the female's ventral side. The female then carries the developing eggs in a specialized pouch until they hatch into miniature versions of the adults. To maintain a healthy colony, ensure a proper male-to-female ratio and provide ample hiding spots and moisture to accommodate the growing population.

5. Handling and Interaction

While Armadillidiids are generally docile and harmless, with their ability to roll up as a defense mechanism, it's best to limit handling them. Minimizing direct contact helps prevent stress and potential damage to their delicate exoskeleton. However, gentle observation and providing stimulating environments can be equally enjoyable for both you and your isopods.

6. Common Health Issues and Troubleshooting

Armadillidiids are remarkably robust creatures, but they can still face a few health issues. Excessive moisture or inadequate ventilation can lead to respiratory problems or mold growth, so ensure proper enclosure conditions. Parasites and mites can occasionally affect isopods, so regularly inspect and quarantine new additions before introducing them into your colony. In case of any signs of illness or distress, consult a veterinarian experienced in invertebrate care to diagnose and advise on appropriate treatment.


Armadillidiids are captivating creatures that offer a unique perspective on the world of invertebrates. With proper care and attention, they can thrive in a well-designed habitat and provide endless fascination to their keepers. So, whether you're setting up your first isopod colony or expanding your existing collection, the joy and wonder of Armadillidiid care await. Embrace the curious world of these roly-poly wonders, and let the delightful journey begin!

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