If you are looking to start a breeding colony of roaches, Roachman is the guy to talk to http://www.angelfire.com/oh2/Roaches/Roachman.html. This guy has numerous species available if you are looking to start a colony. I have been breeding a Blaberus spp. that I obtained from a university colony for years now, but I feed them to my lizards, never tried them on a hook. I would think one of the softer, smaller roach species would probably work better for bait. Roaches are pretty easy to breed and don't require much maintenance compared to crickets. You just have to be careful since most species can crawl on glass and lots of them can fly and get out of the container