The “Assessing Fisheries in a New Era: Extended Guidance for Rapid Appraisals of Fisheries Management Systems” handbook provides new and extended guidance on appraising fisheries management systems from the 1996-released Rapid Appraisal of Fisheries Management Systems Handbook (RAFMS Handbook). This guide presents updated concepts and methodologies for fisheries management research that acknowledge new technology advancements and the human and gender-related aspects of fisheries.