This study was designed to elucidate the effects of arsenic (As) on morpho-behavior, growth development and molecular mechanisms a commercially important fish, rohu carp, Labeo rohita, in Bangladesh. Fish fry with an average weight 387.5 ± 169.25 mg length 3.35 0.37 cm were collected from local hatchery Mymensingh, Bangladesh acclimatized for week Department Fisheries, University Dhaka before s...