It is not recommended to put a garden lizard in a hermit crab tank for a number of reasons:
Different environmental requirements: Garden lizards and hermit crabs have different environmental requirements. Lizards need a warm, humid environment, while hermit crabs need a cool, dry environment. Mixing these two species in the same tank can lead to health problems for both animals.
Predation: Garden lizards are predators and may eat hermit crabs. Even if the lizard does not eat the hermit crabs, its presence can stress them out and make them more susceptible to disease.
Escape risk: Garden lizards are agile climbers and can easily escape from a hermit crab tank. This can pose a safety risk to both the lizard and the hermit crabs.
Competition for resources: Garden lizards and hermit crabs compete for the same resources, such as food and shelter. This can lead to conflict between the two species and make it difficult for either of them to thrive.
If you are interested in keeping both garden lizards and hermit crabs, it is best to keep them in separate tanks. This will help to ensure that both animals have the best chance of staying healthy and happy.