She had already won the 100m backstroke and freestyle gold medals, and the 50m freestyle, along with getting silver in the 400m freestyle event.
Fisher, 20, has one event remaining, the 200m individual medley, in which she won her first Paralympic gold medal in London last year.
Pascoe has two events to swim, the 100m backstroke and 50m freestyle.
North Shore's Daniel Holt finished fourth in the S13 400m freestyle final for visually impaired athletes.
Holt clocked 4:15.72, trailing home winner Ihar Boki (crrt) of Belarus, who won in a world record 3:55.56, eclipsing his own world best mark, set in London last year.
Hamilton's Jesse Reynolds, the only newcomer in the New Zealand team at the championships, finished sixth in his S9 category 400m freestyle final in 4:31.71.
Hamilton Boy's High School pupil Reynolds has one leg. The race won in world record time by Australian Brendon Hall, 4:09.93.