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I'm new to the roaches, obviously. I had bought a few adult Dubias to start a colony ( 1 adult male and five females and later from the same pet store another adult male and 6 more females), from a pet store, to feed a bearded dragon. I let them sit a while so that my beardie could finish off his rather annoying/smelly crickets. During this time I only witnessed one birth. So I decided to buy a colony of 250 mixed size Dubias off Ebay. As soon as I got them I noticed a marked difference in shape from the babies my Dubias had given birth to. Their bodies were more oval than round like the dubias I had previously purchased. The juveniles seemed a little lighter, almost yellow and had more "spots." I looked to see if there have been lighter colored dubias, and I had seen another guy on here who boasted of a yellow morph he was breeding in Dubias, so I figured maybe it was just a lighter strain. Some time has passed and today I went to pick some roaches for feeding and there was a male roach in there who looked markedly different in both size and color to my dubia males. I decided to look online at pictures and I am sure he is a Discoid! I do see a few new babies, but not enough for what I need to keep up with my dragon. So what in the heck do I do now??? Can discoid and dubia crossbreed?? If not and they should be housed separately, how in the world do I differentiate between the two when they look so similar to get them separated? Do they breed as fast and as many as the dubia? Their needs look the same. The only thing I could think to do are separate the adults but I can not really tell with all the juveniles. Is it possible the Ebay seller could have mixed colonies or did he give me all discoid? Please help.