I've now read several cases of cannibalism in various Blaberus species. I would like to know what causes this as well. Fort. I've never experience this with any of my Blaberus species. My Blaberus diet contains a fair amount of rotting wood pieces , a lot of eco earth / sphagnum moss and dead leaves mix , 3 or so inch of substrate , spring mix / romaine lettuce leaves , various fruits / veggies , organic dog / cat food , fish flakes .... and I do mist in their containers about three times a week. I've never experience cannibalism.... this setup and husbandry practice goes with my Pepper Roaches as well.