Many consumer products, such as sports clothes, cosmetics, and even food containers contain tiny silver particles. This could end up in the water, possibly harming the aquatic life. Recognizing the significance of the life stages of fish in aquatic ecosystems as well as the food web concern, the effect of colloidal nanosilver in consumer products was tested in juvenile fishes of a pond ecosystem. Fishes were exposed to colloidal nanosilver at different concentrations of 1μg/ml, 2μg/ml, 3μg/ml, 4μg/ml, and 5μg/ml. The estimated LC50 and LC90 values were 3.16 and 6.70 μg/ml respectively for the juvenile fishes, revealing higher sensitivity even in lower concentrations. It is also established that with the increase in concentration of colloidal silver solution mortality of fishes also increases from different Experimental trials. It was found that there was a positive relationship between mortality and concentration levels. Thus, colloidal nanosilver can cause toxic effects which means that the release of colloidal nanosilver into the aquatic environment or its direct application as an antimicrobial agent in consumer products should be reduced or no longer be allowed

Antimicrobial, Ecotoxicity, Nanosilver, LC50, LC90

It has long been known that, in the form of free ions, silver particles can be highly toxic to aquatic organisms. There is a lack of detailed knowledge about the doses required to trigger a response and how the organisms deal with this kind of stress. In the past, silver mostly found its way into the environment in the vicinity of silver mines or via wastewater emanating from the photo industry. More recently, silver nanoparticles have become commonplace in many applications as ingredients in cosmetics, food packaging, disinfectants, and functional clothing. As per the comparative study of different concentrations of colloidal nanosilver in each experiment trails, it is evident that with the increase in concentration of colloidal silver solution, mortality of fishes also increases

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Gayathri L. Vijayan, Nandini N.J. and Shruthi P. (2024). The Impact of Colloidal Silver on Natural Communities of Juvenile Fishes After Short-term Exposure. International Journal on Emerging Technologies, 15(1): 45-48.