The mean results of growth and reproduction

Parameters *	Copper sulfate concentrations (mg CuSO4. l^-1)
Parameters *	0 (Control)	0.004	0.013	0.019	0.026
Initial length (cm)	3.61 ± 0.034^a	3.58 ± 0.026^a	3.57 ± 0.014^a	3.6 ± 0.031^a	3.59 ± 0.04^a
Final length (cm)	3.76 ± 0.02^a	3.71 ± 0.037^ab	3.65 ± 0.017^ab	3.7 ± 0.026^ab	3.6 ± 0.01^b
Initial weight (gr)	0.36 ± 0.005^a	0.36 ± 0.017^a	0.37 ± 0.011^a	0.37 ± 0.023^a	0.36 ± 0.011^a
Final weight (gr)	0.82 ± 0.023^a	0.78 ± 0.023^a	0.72 ± 0.011^b	0.63 ± 0.005^c	0.65 ± 0.003^c
Specific growth rate	0.91 ± 0.013^a	0.86 ± 0.02^a	0.71 ± 0.015^b	0.69 ± 0.041^b	0.59 ± 0.018^b
Feed conversion ratio	4.36 ± 0.16^c	4.76 ± 0.065b^c	5.88 ± 0.00^b	6.62 ± 0.31^ab	7.88 ± 0.89^a
Relative fecundity	56.82 ± 1.82^a	51.42 ± 3.52^a	32.45 ± 1.63^b	34.89 ± 1.51^b	25.57 ± 1.33^b
Gonadosomatic index	6.1 ± 0.115^a	5.61 ± 0.034^b	5.32 ± 0.005^c	5.29 ± 0.023^c	5.31 ± 0.011^c
Surviving rate	88.88 ± 2.77^a	55.55 ± 7.34^b	52.77 ± 7.34^b	30.55 ± 10.01^c	27.77 ± 2.77^c
Offspring production	3.88±0.22^a	3.33±0.17^b	1.94±0.07^c	1.83±0.096^c	1.55±0.07^c

*Mean ± SD values with different superscript letters within a raw for a parameter are significantly different (P<0.05).

Table 1: The mean results of growth and reproduction performances of guppy (P. reticulate) in response of exposure to several concentrations of Cooper

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