In a social environment, a communication signal may provide information to individuals other than those interacting with the signaler. Eavesdropping is gathering information without be-ing directly involved in the communication interaction. Female Siamese ghting sh, Betta splendens, choose the winner of male-male aggressive interactions based upon information she extracts from eavesdropping.Naïve females, those that have not witnessed the interaction, show no consistent preference for either male. This suggests that losers would be more suc-cessful in courting a naïve female. We conducted two sets of trials: one set tested the losers' courting preference of eavesdropping females or naïve females whereas the other tested the winners' courting preference. We found that losers displayed gill cover erection, a courting behaviour, signi cantly more towards the naïve female than towards the eavesdropping fe-male whereas the winner showed no preference. These results suggest that male B. splendens can moderate their response to an audience in ways more complex than previously appreci-ated. Our data support the suggestion that communication can serve as a network that reaches beyond the immediate signaler and receiver. Understanding the complexity of communication networks will enable us to broaden our ideas about the mechanisms of sexual selection.