The Gestroi isopod is a terrestrial isopod species, often used in terrariums to feed certain reptiles, amphibians, and invertebrates. This small crustacean is valued for its ability to decompose organic matter in enclosed environments, helping to maintain the ecological balance of the terrarium. The Gestroi isopod is also a natural source of calcium and other essential nutrients, providing a healthy diet for herbivorous and omnivorous reptiles. Furthermore, it is easy to breed, reproducing quickly in a humid and warm environment, making it a popular choice among breeders.