Lake sturgeons are a type of fish.
Like all types of fish, each lake sturgeon gives one fish fillet when caught.
Catching lake sturgeons
Lake sturgeons can be caught in medium and small circles and therefore are harder to catch.
See Fishing List for more detailed information.
Lake sturgeons in the fishing book
The lake sturgeon is on page 19 of the fishing book:
This big fish has thick skin. Nip and bite all you like, he doesn't care!