I got my turt guppies for the first time yesterday. I ended up getting 5 for the price of 3

(39 cents each here, and only one store carries them!) I put two in, and he didn't even notice them for the first half hour (he was too busy eating lettuce

) Then when he finally saw them, he would chase one into the corner, then it would swim down and he would follow it, then it would zoom up and he'd still be looking around the bottom of the tank for it

within a couple hours though, he figured out if he hearded them upwards into a corner, they would have no where to go. He finished off the bite sized morsels pretty quick. I put the other 3 in a fish bowl with my recooperating plants. Maybe they'll breed and I won't have to buy them again xD
(edit) Ooooh, I just looked at them, and one of them looks pretty fat! I'll hold off on feeding them to him

How long does it take a guppie to mature, does anyone know?