I purchased an African rope fish for my daughters 45 gal. She had some large tetras, danios, pleco, total of about 14 fish. I made sure the tank was totally closed at the top so it would not escape. I got it the right food, I think. After about 1 week or so, it was dead. But, in that week, 3 danios disappeared, 1 red eye tetra lost an eye, and the pleco completely disappeared! What can eat a pleco?! Since it has died, so have almost all of the fish. We are down to 3 and the old algae eater. When we bought the rope fish, they said it would be fine with what we had. Then another shop said that they eat fish, and should not be with other fish. Still have no idea what killed everything, water tests good at the shop. Added some meds just in case. So, any ideas on what is killing everything?? And can a rope fish be with others??? That was her favorite and she wants another one when we get the tank stabilized. It has been a few years since I had my tanks set up, so any help you can offer is greatly appreciated. Thanks!