Very cool.....do we still not know what species of garter this is???? I know I can't really tell from the baby pics. Nothing like I've ever seen before and I know the pic of moma you had wasn't really familiar either?????
Oh, as far as the colour determining sex....really doubt it, I don't think there are any garters that show sexually dimorphic colours. And as for the guppies.....yep that's them. There are usually cheaper ones sold at the petstore called "feeder guppies".....just ask I'm sure they'll know what you're talking about. Again congrats!!!!
Roy