They have 2 sizes for duplicareus. I recommend going with the smaller ones. They're not that much smaller than the mediums and $5 cheaper. There was a tank of about 75-100 small and there are runts in the group (normal) but they all looked really good.SaltySeaLion said:Hey, thanks, everybody! I'm considered ordering some duplicareus, as well, so this gives me great hope that I'll be getting some healthy cories! I appreciate the info!