Table 2.

Frequency (%) of erythrocytic nuclear abnormalities (ENAs) of Oreochromis niloticus exposed to fluoxetine for 96 h.

Frequency (%) of ENAs	Treatment groups
	NC	SC	10 µg/L	100 µg/L	1000 µg/L	PC
MN	0.04 ± 0.04	0.06 ± 0.03	0.07 ± 0.04	0.24 ± 0.11*	0.26 ± 0.11*	0.56 ± 0.32*
LN	0.05 ± 0.04	0.05 ± 0.04	0.06 ± 0.05	0.07 ± 0.04	0.14 ± 0.08*	0.17 ± 0.08*
BN	0.15 ± 0.06	0.15 ± 0.06	0.16 ± 0.06	0.20 ± 0.07	0.25 ± 0.14	0.72 ± 0.29*
NN	0.20 ± 0.07	0.20 ± 0.06	0.21 ± 0.07	0.26 ± 0.07	0.37 ± 0.14*	0.84 ± 0.35*
KN	0.33 ± 0.15	0.34 ± 0.14	0.36 ± 0.16	0.41 ± 0.15	0.60 ± 0.16*	0.95 ± 0.24*
BC	0.01 ± 0.02	0.01 ± 0.02	0.01 ± 0.02	0.01 ± 0.02	0.01 ± 0.02	0.03 ± 0.05
Total ENAs	0.76 ± 0.20	0.79 ± 0.23	0.86 ± 0.27	1.18 ± 0.20*	1.62 ± 0.48*	3.26 ± 0.64*

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; MN: micronucleus; LN: lobed nucleus; BN: blebbed nucleus; NN: notched nucleus; BC: binucleated cell; KN: kidney-shaped nucleus.