Isopod Colony - Zebra 10+ ctIsopods are a must for all terrariums! They are vital to the health of terrariums because they eat the decomposing materials like dead leaves, rotting wood, and other undesirable material. They will also till the soil adding aeration while also helping to fertilize the soil! The Zebras (Aramadillium maculatum) are a medium species with slow breeding. They can fully ball up, and like to stay near the surface. They are best in terrariums where they are