HELP! Is my female guppy pregnant? (see pictures)

[Frostbyte]

I bought three female guppies from Petco about a week ago. At the store they had the females separate from the males (I'm assuming to prevent reproduction). After bringing them home and doing some research I think this one is pregnant. See picture below. If it is, I need to know because I either want to build or buy a breeder box so that the fry doesn't become a snack. Any help here would be greatly appreciated. Thanks

Rob

[Brandon O'Brian]

It looks like she's gravid. The gravid spot by her anal fin will darken towards the end of gestation.

[BIG FISH]

shes preggers if you will. 2-3 weeks and walla. baby guppies. crushed flakes, artemia, baby brine shrimp- hikari makes a frozen baby brine shimp.

[ptran]

Yep, she's pregnant.