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 |