Metals   RfD Catfish Tilapia Barbus EDI(xE-06) HQ(xE-06) EDI(xE-06) HQ(xE-06) EDI(xE-06) HQ(xE-06) Cd 0.001 3.00 0.003 2.00 0.002 2.00 0.002 Co 0.100 0.40 0.040 0.30 0.030 0.20 0.020 Cu 0.040 0.30 0.060 0.20 0.050 0.10 0.030 Mn 0.140 0.40 0.030 0.40 0.030 0.20 0.020 Fe 0.700 0.06 0.080 0.50 0.040 0.02 0.030 Pb - 7.00 - 5.00 - 0.30 - Zn 0.300 0.03 0.001 0.02 0.070 0.01 0.040 Cr 0.003 8.00 0.030 5.00 0.002 3.00 0.050 Ni 0.020 0.02 0.001 0.20 0.090 0.10 0.060

Table 5: Estimated daily intake (EDI) and HQ of trace metals by consuming three commercially important fishes of Tendaho reservoir in Ethiopia (RfD = mg/Kg/day and EDI = mg kg-1day-1).