Abstract: Statistical analyses were performed on the contents of 16 microelements in 16 species offish and in related aquatic environments; Significant correlations were observed betweensome pairs of these elements,and stepwise variable selection is effectively applied inregression analyses between one element and several others,Enrichment of microelementsmav occur in fish as indicated bv the enrichment coefficients of 12 microelements,rangingfrom 79.2 to 21206 in 12 species of fish,Significant correlations were also found between theelement contents in fish and those in water.