† To whom correspondence should be addressed. This study presents a new evolutionary network minimization (ENM) algorithm. Neurocontroller minimization is beneficial for finding small par-simonious networks that permit a better understanding of their workings. The ENM algorithm is specifically geared to an evolutionary agents setup, as it does not require any explicit supervised training error, and is very easily incorporated in current evolutionary algorithms. ENM is based on a standard genetic algorithm with an additional step during reproduction in which synaptic connections are irreversibly eliminated. It receives as input a successfully evolved neurocontroller and aims to output a pruned neuro-controller, while maintaining the original fitness level. The small neurocon-trollers produced by ENM provide upper bounds on the neurocontroller size needed to solve a given task successfully, and can provide for more efficient hardware implementations.