Hi, I am new to keeping garter snakes. I like this species because it is not required to feed them rodents. I purchase my cousin and I a garter snake each (I'll get better with the specific latin name later on), you know the common black with yellow lateral stripes. I have had it for four days now. It has yet to be fed.

Should I start out with some rosy red minnows? What about earthworms?
I heard earthworms can be toxic if the soil they were harvested from contains toxins. And for further notice I absolutely refuse to feed it pinkies, fuzzies, mice, etc.
I also have knowledge of vitamin supplements. And I bought some at Petsmart. (Snakes are from Petco).

.......I completely understand why garter snakes love fish. After all, who can resist a fish fry now and then?.......