Table 5
Mean (± SE) concentration values of electrolytes in the gills of C. gariepinus treated with Corexit 9500

Treatments (ml/l)	Na⁺ (mmol/l)	K⁺ (mmol/l)	Cl⁻ (mmol/l)	HCO₃ ⁻ (mmol/l)
Control	138.33 ± 5.27^c*	4.26 ± 0.65^c	97.33 ± 3.76^c	24.00 ± 2.03^a
0.0125	151.33 ± 9.57^b	5.90 ± 0.43^a	103.00 ± 5.3^b	20.66 ± 1.99^b
0.025	154.00 ± 12.01^ab	5.70 ± 1.12^ab	104.33 ± 5.86^ab	20.00b^c
0.05	155.00 ± 3.45^a	5.55 ± 0.97^b	106.00 ± 3.67^a	18.50 ± 2.86^c