The man officials believe kidnapped the stepdaughter of UFC fighter Walt Harris has been arrested -- and you can see in the mug shot, the dude's eye is swollen shut.
Cops had been on the hunt for 30-year-old Ibraheem Yazeed -- who was spotted at a Chevron station in Auburn, Alabama on Oct. 23, the last time anyone saw 19-year-old Aniah Blanchard.
Now, officials say ... Yazeed was apprehended by U.S. Marshals in Escambia County (western Florida) early Friday morning after a brief foot pursuit.