Abstract
Two-spot catfish (Mystus nigriceps) is freshwater aquatic organism that can survive against the change in a polluted aquatic environment. The aim of this study is to determine the content of heavy metal cadmium (Cd) in sediment, water, and organ of two-spot catfish (Mystus nigriceps) and to examine the histopathological changes in its liver of two-spot catfish living in the waters of Ketingan Estuary river, Sidoarjo, East Java. The results showed that there were damages in liver of 9 samples of two-spot catfish taken from 3 stations. Those damages were were hepatocyte congestion and swelling on the liver. The observations on heavy metal content i.e. cadmium (Cd) in the water, sediment and the two-spot catfish liver showed that they were above the specified threshold. The water quality, i.e. temperature, pH, DO, and brightness were well within the required range.
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