If it came from Vista California it's most likely a Western Fence Lizard, Sceloporus occidentalis.

I'd recommend a 15-20 gallon tank, with UV lighting and a basking spot of 95-100 degrees F. All the native Scelops I've kept haven't been big on standing water so it works best to mist them once a day so that they can drink the droplets. Gut-loaded crickets dusted with a calcium supplement like rep-cal would make the best food. They seem to get obese if mealworms make up the majority of the diet.

-Alice