Measured Copper Toxicity to Cnesterodon decemmaculatus (Pisces: Poeciliidae) and Predicted by Biotic Ligand Model in Pilcomayo River Water: A Step for a Cross-Fish-Species Extrapolation

Table 1

Main chemical and physical parameters of the water where C. decemmaculatus specimens were captured (ND: not detected).

Parameter
T (°C)	17
pH	7.86
CE (μS)	512
Diss. O2 (mg L^−1)	11.02
NH4 (mg L^−1)	0.005
NO3 (mg L^−1)	0.006
NO2 (mg L^−1)	0.003
SRP (mg L^−1)	0.141
SO4 (mg L^−1)	14.2
Cl (mg L^−1)	17.5
Alkalinity (mg CaCO3 L^−1)	292.9
Mg (mg L^−1)	17.8
Ca (mg L^−1)	27.7
Cu (mg L^−1)	ND
Zn (mg L^−1)	0.03
Cr (mg L^−1)	0.04
Cd (mg L^−1)	ND
Pb (mg L^−1)	0.15