(A) The CA biplot showing relationships between carp tissues, dorsal (DM) and abdominal (AM) muscle and liver (L), fish gut content (GC), zooplankton (ZO) and fish pond sediment (SM) based on their element concentrations. Inset: the deviation of the measured element concentrations in GC from the expected ones (EGC). (B) The CA biplot showing relationships between carp tissues (dorsal and abdominal muscle and liver), and gut content.