I've been breeding duplicareus for a while now. My original batch were wild caught and took a few years before they started breeding for me even though I received them as adults. But after tank-raising several generations, they seem to spawn fine. Definitely not as frequent as most other cories I have bred before, only spawning 1-3 times per year. They mostly spawn during the summer or after summer for me but I have experienced them spawning for me during the winter as well. I have a couple of fries being raised even now.