Saugers are a type of fish.
Like all types of fish, each sauger gives one fish fillet when caught.
Saugers can be caught with purple and blue lures in any fishing spot, but their favorite spot is #1 (the shallow area in front of the fisherman's hut).
Saugers can be caught in large circles and therefore are easier to catch.
See Fishing List for more detailed information.
Saugers in the fishing book
The sauger is on page 19 of the fishing book:
Likes cool water and swimming in a school. This fish wants to get ahead in life!