Polycyclic aromatic hydrocarbons (PAHs) are well-documented class of contaminants found in water and sediments, and are an environmental concern as they RX-3117 are toxic, long-lived, and can travel long distances (Neff, 1979 and UNEP, 2005). PAHs are a large group of compounds composed of two or more fused aromatic rings, with more than 100 congeners. They are byproducts of incomplete combustion of organic materials, which are usually deposited in soils and sediments of aquatic systems, through petroleum contamination, fallout from air pollution, and terrestrial runoff (Christensen et al., 1997 and Yang, 2000). Due to their carcinogenic properties and acute toxicity, 16 congeners of PAHs have been listed as priority control pollutants by the USEPA (USEPA, 2014). These compounds have extremely strong bonds between their chlorine and carbon components and are attracted to fat and highly insoluble in water. Therefore, they possess chronic toxicity, persistency, and bioaccumulative ability (Fisk et al., 2001 and Hop et al., 2002), and are also endocrine disrupting chemicals (Li et al., 2008 and Soto et al., 1995). The PAHs could contaminate pond sediments through irrigation and atmospheric deposition over a long period, subsequently entering into food chains, accumulating in fish, and finally reaching humans. Most of the studies related to health risk assessment of environmental chemicals in fish have been targeting dioxins, organochlorinated pesticides (OCPs) and polychlorinated biphenyls (PCBs) (Cheung et al., 2007, Hites et al., 2004 and Xing et al., 2008), however, few studies focus on PAHs (Wang et al., 2010).