Neurotoxic effect and loss of schooling cohesion in the gregarious native fish Galaxias maculatus under environmental concentrations of 2,4 dichlorophenol

Key Points

• Exposure to environmental concentrations of 2,4 dichlorophenol leads to significant neurotoxic effects in Galaxias maculatus, disrupting normal behavior.
• The study observed a marked loss of schooling cohesion, with affected fish displaying altered movement patterns and reduced social interaction.
• Assessment of fish behavior was conducted through direct observation under controlled conditions, focusing on group dynamics and neurotoxic symptoms.
• These findings highlight the ecological risks posed by contaminants, emphasizing the need for further studies on aquatic species exposed to pollutants.