To fight, flight or pee?
That is the question for the
Aggressive cichlid.
Aggressive interactions between individuals can be dangerous and energetically expensive and it is important that the two competitors are able to communicate effectively to avoid such costs. When competing cichlid fish engage in agonistic interactions they are known to communicate via visual cues, but new findings suggest they also use chemical cues by urinating during encounters. Bayani et al, 2017.