Experiments were carried out on rocky shores at Arraial do Cabo (Southeast Brazil) to evaluate how the dusky damselfish, Stegastes fuscus (Cuvier, 1830) affects the benthic community structure. Cage exclusion showed that S. fuscus strongly influences

This study reports on the temporal dynamics of feeding and reproduction of the damselfish, Stegastes fuscus in the coastal rocky reefs of northeastern Brazil. Water temperatures and rainfall data were registered and fish were captured on a monthly basis

Territorial defence by Brazilian damselfish Stegastes fuscus was studied in north-east Brazil through underwater observations. The fish mostly fed on Gellidium sp. and strongly defended a territory with a mean size of 2 m2 (range 1·27–3·07 m2); its mean