contrary to popular belief Dubias aren't the end all to be all of feeder roaches there are a lot of roaches that make great feeders and Discoids are a common staple especially in places like Florida where Dubia are illegal to keep. i personally use three different species of roaches as feeder right now and still expanding the species i use. my current feeder project are Orange head roaches "Eublaberus posticus" too see how thay work because i understand thay tend to move around quite a bit more than dubia that have a habit of playing dead some times.
here is a shot list of other roaches that i will be trying out at some point
Byrsotria sp. "Cuba"
Eublaberus distanti "Six-Spot Roach"
Blaberus boliviensis
Blaberus fusca (can flutter a little)
Blaberus parabolicus
Blaberus atropos
and that's not all that are out there as feeder options and thay all cant climb glass or really fly. just saying there are other options out there and really Dubia craze is relatively recent things as i understand it.