Fish Heaven 2.0: summary of modifications and additions to earlier versions and illustrations of its application as a tool for evaluating fisheries management systems

This note describes the most recent additions to Fish Heaven and provides illustrative examples of its application as a tool for evaluating fisheries management systems. As in previous years there have been numerous small changes and additions to the functionality of the program. This note describes the large structural additions which have been made to Fish Heaven and which now allow a very wide range of models to be constructed and explored. The application of Fish Heaven as an evaluation tool is illustrated by some examples of how Catch Per Unit Effort performs as an indicator of abundance under simple stock scenarios.