Making the paper: Redouan Bshary & Olof Leimar.

The article provides information on the research of different teams led by Redouan Bshary and Olof Leimar regarding the behaviour of bluestreak cleaner wrasse fish or Labroides dimidiatus. The research team of Bshary first observed that pairs of bluestreak cleaner wrasse cheat less than individuals. When his team presented the findings, Leimar proposed a solution and subsequently developed a new model of game theory to explain how pairs provide more efficient cleaning. Based on the results of both research, the researchers found out the male in a pair increases the female's cooperation by punishing her for cheating behaviour.