Abstract
Pesticides are important for protecting agricultural crops against harmful pests. However, pesticide usage has become a serious issue of concern as they cause severe damage to the ecosystem and environment. Organophosphates are one of the most extensively applied insecticides in agriculture. Agricultural runoff containing pesticide-laden effluent ultimately pollutes the aquatic environment. Pollutants introduced to aquatic ecosystems are absorbed by various flora and fauna, including fish, causing harmful effects and mortality. The LC50 values of a few organophosphate pesticides in several fish species and other investigations relevant to sublethal toxic effects such as haematological, biochemical, histopathological, and behavioural alterations were reviewed in this article.
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