Inspired by the results of zooplankton, we speculated that the
difference of selection to zooplankton food would result in the
different accumulation in three species of fish. Data obtained from
experiments verified this point. S. maximus and P. olivaceus mainly
preyed on H. uniremis and secondarily on M. mongolica, while
F. rubripes primarily preyed on M. mongolica and secondarily on
Artemia sp. In accordance with the Hg concentrations in the three
zooplankton species, it could be reasonable to explain why the Hg
concentration level is as follows: S. maximus > P. olivaceus >
F. rubripes. Over the last decade, numerous studies have determined
that carnivorous fish possesses higher Hg concentration than