Table 3. Descriptions of the aggressive behaviours examined in the territorial owner during the dyadic contests, that were simultaneous or contiguous to acoustic emissions.

D1,2	Aggressive display of the first and second dorsal fins [25]
APP	Directed and rapid movement (“tripod” locomotion; [78]) towards the cage containing the intruder
ENT	The fish presses the snout against the cage, in an apparent attempt to reach the intruder
GAP	Head slightly lifted, mouth wide open, hyoid depressed and extension of branchiostegal membranes (gaping; [25]), darkening of body colouration
SLT	The fish draws away from the cage, heading towards the defended shelter
TUR	The fish turns around the cage where the intruder is confined, apparently trying to reach the intruder