Table 2.

Mercury concentrations of predominant fish species of the Second Songhua River in 1975 (milligram/kilogram; NEIGAE 1994)

Species	n	Range	Mean
Hemiculter leucisculus	93	0.100–1.770	0.699
Xenocypris macrolepis	105	0.032–1.840	0.559
Cyprinus carpio	67	0.076–2.160	0.409
Carassius auratus	135	0.040–1.720	0.906
Hypophthalmichthys molitrix	17	0.060–0.940	0.330
Parasiburus asvtus	37	0.190–2.375	1.255