The project "Minor Use Permit for Erythromycin in Finfish" aims to address the need for effective antimicrobial treatment options against gram positive bacteria in finfish aquaculture. Currently, there are no permitted or registered antimicrobials for use in finfish effective against these types of bacteria. Erythromycin (ERYC) has shown to be the most effective antimicrobial for gram positive organisms in finfish. Obtaining a minor use permit for ERYC would provide veterinarians with a valuable tool to manage disease outbreaks and treat bacterial infections in finfish. The appropriate use of antimicrobials can alleviate illness, improve fish welfare, and reduce the spread of infections. The project seeks to collect and collate data to satisfy the requirements of the permit application, addressing gaps in existing knowledge and demonstrating the efficacy, safety, and antimicrobial resistance risk associated with ERYC. Ultimately, the permit would provide the aquaculture industry with an important treatment option to manage bacterial diseases, improve fish health, and support sustainable production practices.