Research article Open access
Gill histology of Nile tilapia Oreochromis niloticus following chronic and acute exposure to ammonia
Ammonia is a common aquatic pollutant and is toxic to fish. The main nitrogenous compound excreted by fish is also ammonia, which may reach toxic concentrations in high-density fish culture, reducing growth and productivity. In this study, changes in gill structure and mucus cell distribution were examined when juvenil …