Original ResearchPublished 17 April 2026Large-scale molecular serogroup analysis of Flavobacterium psychrophilum isolates recovered from captive, wild, and feral fishes in the USASean M. G. Lennox · Christopher Knupp · Esteban Soto · Douglas R. Call · Pierre Nicolas · Thomas P. LochFrontiers in Aquaculturedoi 10.3389/faquc.2026.1805926