Accumulation of heavy metal in fish not only causes morphological, biochemical, haematological and genetic changes but also poses serious health risks to their consumers. The present study investigated the effects of chromium (Cr) exposure on the alteration of physiological parameters and the expression pattern of three candidate genes: metallothionein 2 (MT‐2), interleukin 1 beta (IL‐1β) and tumour necrosis family 1 (TNF) in...