He travels the world as a professional fisherman.
fisher (animal); pekan
Refers to the North American marten, Martes pennanti. Primarily used in zoological or wildlife contexts.
The fisher is a member of the weasel family and lives in North America.
When フィッシャー refers to the small marten-like animal (pekan), it is counted with 匹, the counter for small animals.
fisherman
Borrowed from English 'fisher'.