In the artisanal fishing sector of Tenerife (Canary Islands), fish traps capture a variety of benthic species, including the parrotfish (Sparisoma cretense). The image shows an unusual behavior in which a male individual attacks, ultimately killing, another individual, a female. This type of intraspecific aggression is not common in the species and could be related to factors such as stress caused by confinement within the trap, competition for space, or territoriality. Since no consumption of the dead individual was observed, the behavior cannot be considered cannibalism, but rather a case of extreme intraspecific aggression.