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International Journal of Aquaculture, 2014, Vol.4, No.06
http://ija.sophiapublisher.com
41
Despite its extensive treatment processes for heavy
metal removal from wastewater residues, heavy
metals remain in the waster and absorbed by fish. The
concentrations of
h
eavy metal in the tissue of
freshwater fish vary considerably among different
studies.
Therefore, there should be a continuous
assessment of pollution with metals from the
mentioned sources in the Nile water and other
commercial Nile fish, with a view to reducing the
level of pollution via education and public
enlightenment. Fish can be considered as an index of
metal pollution in the aquatic bodies (Dural et al.,
2007; Anim et al., 2011), and therefore, could be a
useful tool to study the biological role of metals
present at higher concentrations in different species of
the Nile fish.
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