Hissing Cockroaches?

I have a few questions, I bought 3 of these suckers for my Chinese Water Dragon, she ate one and I feel they're too big. So I think I wanna breed them. Are they a-sexual and breed on their own or what? I'm very new to them, I have them in a little cage right now with some substrate.

I have dubias and they are super easy. Here is the wikipedia link that should get you started.
Madagascar hissing cockroach - Wikipedia, the free encyclopedia
Gary

Hissers can climb glass so watch out (and no they aren't A sexual so you need a male and a female, it will also take years to establish a colony with only 1 male/female). If you want to start a roach colony the best is Dubia. Good care sheet for them on the site and if you want to start a colony I have a place you can get a starter colony for cheap (as long as you don't live in florida ) just send me a pm if you decide to start one (that goes for anyone that wants to start one)