I think one is male and one is female. They are just in a x-large critter keeper until a tank opens up ( either I move my cornsnake or I build my sav's cage).I want to get a few more when a new cage opens up.They are very active,don't climb and cheaper to house and feed then leopard geckos( they are a hands off gecko though as they are tiny).They are a great choice for a first gecko and also for people who enjoy just watching.