Table 1.

Frequency (%) of DNA damage in erythrocytes of Oreochromis niloticus at each level during 96 h of treatment with fluoxetine.

Level of DNA damages	Treatment groups
	NC	SC	10 µg/L	100 µg/L	1000 µg/L	PC
Minimal	45.20 ± 3.49	45.90 ± 2.81	42.30 ± 4.35	26.20 ± 3.77*	11.30 ± 1.42*	1.00 ± 0.53*
Low	46.80 ± 5.81	44.10 ± 3.03	47.70 ± 4.00	59.50 ± 4.50*	35.70 ± 2.87*	11.50 ± 4.24*
Mid	7.90 ± 3.25	9.90 ± 0.88	9.80 ± 1.62	13.20 ± 1.81*	47.60 ± 3.72*	56.25 ± 4.77*
High	0.10 ± 0.32	0.10 ± 0.32	0.20 ± 0.42	1.10 ± 0.74	5.40 ± 1.65*	30.63 ± 5.85*

The results expressed as mean ± standard deviation. * Statistically significant differences to the negative control group (p < 0.05). NC: negative control group; SC: solvent control group; PC: positive control group; 10, 100, 1000: treatment groups exposed to 10 µg/L, 100 µg/L and 1000 µg/L of FLX, respectively.