Is it possible to keep a 2' amphiuma with larger species of fish if the salamander was tong fed to ensure it got enough food or would it take chunks out of fish even if they were much to large to eat?
As someone who's tried this twice, it's a bad idea. Mine got along with larger "oddball" fish no problem. However, they like a much lower temp than tropical fish. If kept at trop temps, they constantly search for a way out. Amphiumas are very strong too, I can't believe how big a rock my 3 footer can move. The lid will have to be not just sealed, but weighted or clipped down.