in order to tell what they are, look for the sides to be darker, with white bellies and long thin tails. Gekkota is a bit off, as thoese are sthenodactylus and what seems to be in the market right now are true Petrii.
you want sand, some rocky hides that are touching the bottom of the tank and filled with sand as these geckos love to dig about.
temps arond 85-90 on the hot side with a cooler hide area as well. you don't need a water dish as in the wilde they don't have these, just mist the tank good at night at which the temp should drop to about 80.
they will not often chase food items, sort of just wait till something gets close. i feed my gals wax worm from my fingers but in the tank, it's small, 2 or 3 week crickets, a few meals worms to mix it up. if your gut loading, and want to breed these, stick with carrots and grains during the off season and gold fish flake in adition during the on season. something about the extra protien make mating easier. hope this helps.
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Warmest Regards,
Deven Nicholson
Terra5Designs
Ensuring Correct Animal Husbandry through Education and Habitat Design.