Table 9.

Coptodon zillii and Parachanna obscura ingestion screening levels for carcinogenic (ng/g) of selected heavy metals.

$$SL=\frac{TRxATxLTxBW}{\mathrm{C}\mathrm{P}\mathrm{F}\mathrm{o}xEFxEDxIRFI}$$

Heavy metals	Screening Level for Carcinogenic
	C. zillii	P. obscura
Cd	716.8	516.1
Pb	659.4	516.1
As	48.7	37.3
Cr	630.8	917.5
Ni	774.1	200.7