My first guess is that development was done in a daylight tank, and agitation was done by simply inverting the tank, without giving it a twist as the tank was inverted (by twist, I mean doing a spiral motion along with flipping the tank upside down and back). My second guess is that it is not the fixer.
Edit to add: If you suspect the fixer, then you can run it again through fresh fixer and see if that removes the streaks.
My favorite question is "What does this button do?"
Last edited by sreed2006 : 03-10-2019 at 15:14.
Reason: added a note