To provide participants at the 19th Working Party on Billfish (WPB19) with a review of the data and information available on billfish species under IOTC mandate as available in the IOTC databases as of August 2021. The document summarises data on retained (nominal) catches, catch-and-effort, size-frequency and other related data available for the period 1950-2019 and provides a range of fishery indicators for fisheries catching the five IOTC billfish species occurring in the IOTC area of competence