So a while back, one of the two baby frontosas I had went missing, and I thought the Rhino pleco ate it. Yesterday I got another baby Frontosa, and I moved the larger Rhino pleco into the pond because I thought that was the one that ate the other frontosa, bvut I left the smaller common pleco in the tank. Now one of the frontosas has a bite mark on his side. He's still alive, but he's not doing well. Now I think the common pleco was the one that ate the other Frontosa. I moved the common pleco into one of my other 40 gallon tanks, but I hope the baby frontosa makes it.