I just remembered this book but not enough to find it.

Basically, its a dystopia vampire type story. It follows this kid, I don’t remember his name, who lives amongst the vampires secretly. These vampires also aren't normal ones, they have an uncontrollable hunger for anything human, blood, flesh or even saliva. They live in this city under a giant glass dome.

I remember he discovered that one of the girls in his class was also a human in hiding and they would go to this orchard and each peaches or something but she got taken.

At some point he escapes with this group of 4 humans, 1 boy and 1 girl his age and 2 younger boys who are brothers to the girl. Anyway, they escape by sailing down this river and come across this town full of humans. This town is actually a farm for the city with the male "elders" breeding with the mostly female population and sending off 99% of the boys to be eaten. Oh and they also chop off the feet of all the woman to prevent them from escaping.

This all just came to me earlier and I know it's gonna drive me crazy until I find out what it is called. HELP PLEASE.