Aggression and courtship in male blue gouramis.
Males in the PAV treatment
had learned that a light cue preceded interactions with a female,
while males in the UNP group had not learned to associate these stimuli.
Then PAV and UNP males were given access to a female subsequent to exposure to the
PAV males displayed (A) less aggression and (B)
more courtship-related behaviors than their UNP counterparts.