Developing a resist?accept?direct (RAD) framework for managing freshwater fish species shifting in and out of political jurisdictions

Factors including human dispersal, climate change and varied environmental stressors are altering fish species distributions. Range expansions producing new records of freshwater which were rare or previously absent from regional jurisdictions (states, provinces territories). Simultaneously, facing declines local extirpations in some areas their distribution. The Resist-Accept-Direct (RAD) framework can provide guiding principles for how declining, newly arrived, range expanding fishes should be managed range-wide trends considered management conservation decisions. We examine the an example decision tree is applied to examples ranging resisting establishment potentially harmful non-native fishes, accepting providing refuge those threatened other parts ranges, directing migration improve ecosystem services. Applying this may coordination between agencies aiming resilience ecosystems.