Fig. 5. Relative frequency of sounds produced during aggressive social interactions in the multiband butterflyfish, Chaetodon multicinctus. The tail slap, grunt and dorsal-anal fin (DA) erect acoustic behaviors were produced exclusively by territory residents and directed towards bottled conspecifics. Grunt trains were recorded only from bottled fish (most frequently when in pairs) when territory holders came into view and may be an alert or distress signal to the mate. The fin flick acoustic pulse was produced by both resident and bottled fish during confrontations. N values are given beneath each behavior.