The present work outlines the results of the Parallel Discrete Event Simulation (PDES) utilization for solving an individual based model: Fish Schools. This type of model cannot be solved through analytical methods, thus simulation techniques are necessary. The greater problem presented by this type of model is the high computing capacity necessary for solving middle-high size problems (hundreds to thousands of individuals). PDES is presented as a useful and low cost tool for individual-oriented models simulation, since it allows a scalable and efficient solution in accordance with the problem to be simulated.