Table 3. Analysis of variance results of the study parameters across the different sites

	Means of characterizing parameters at different sites (site 1–20)
	Overall mean	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	F-value	Sig.
EC	160	99	94	96	91	169	173	175	186	207	212	209	187	191	197	193	201	185	151	97	98	7,436	0.00
pH	8.3	8.5	7.4	8.0	7.5	7.8	9.2	8.9	9.3	8.5	9.0	8.7	8.3	8.2	7.7	7.0	7.5	8.8	9.6	8.2	8.0	84.2	0.00
Temp	27.7	28.0	29.0	28.0	27.5	27.5	29.4	29.3	28.8	27.2	27.4	28.7	26.9	27.3	26.3	26.8	27.3	27.8	27.0	26.0	28.0	60.2	0.00
DO	6.3	7.3	6.8	7.6	5.6	4.3	6.6	6.2	6.2	5.6	6.2	3.3	7.0	5.8	7.0	6.9	6.1	6.8	7.3	6.0	7.2	71.9	0.00
Turb	2.9	2.1	2.5	2.2	1.5	3.2	3.2	3.7	3.6	2.1	1.7	1.6	3.0	3.9	3.8	3.6	4.3	3.5	3.4	2.3	2.0	153	0.00
Chl-a	8.0	3.7	3.6	2.9	3.9	9.8	11.1	14.5	12.7	4.0	4.5	2.5	9.3	17.2	12.5	11.3	13.0	9.5	8.2	1.9	4.5	127	0.00
TSS	16.5	6.5	10.9	8.9	9.2	18.1	16.6	21.7	20.6	18.1	11.5	12.3	21.6	26.2	30.9	22.5	13.1	21.9	22.0	10.1	7.3	44.9	0.00
SD	1.1	1.4	1.5	1.4	1.7	0.8	0.7	0.8	0.6	0.9	1.5	1.1	1.0	0.3	1.0	1.0	1.0	0.8	1.0	1.1	1.5	6.96	0.00
NP	14.1	9.8	16.0	10.8	16.3	12.3	23.2	10.3	15.3	11.6	14.7	10.2	15.0	14.6	13.3	17.7	9.8	15.0	14.6	13.3	17.7	0.49	0.97
NT	13.4	11.3	15.8	10.3	14.7	9.8	17.0	12.9	15.5	10.3	14.7	12.6	13.2	14.2	12.8	15.3	11.3	13.3	14.2	12.8	15.3	0.45	0.98
Mat	13.7	10.6	15.9	10.5	15.5	11.1	20.2	11.5	15.4	10.9	14.7	11.5	14.2	14.4	13.1	16.4	10.6	14.2	14.4	13.1	16.4	0.66	0.88
Imm	10.7	9.1	12.3	8.3	12.4	9.1	14.2	9.5	11.5	8.9	11.4	8.9	11.1	10.8	10.8	11.5	9.1	11.1	10.8	10.7	11.5	0.78	0.77

EC, electrical conductivity; pH, potential hydrogen; Temp, temperature; DO, dissolved oxygen; Turb, turbidity; Chl-a, chlorophyll-a; TSS, total suspended solid; NP, nile perch; NT, nile tilapia.