I have a fish ID book called
Coastal Fish Identification (CA to Alaska) by Paul Humann and Ned Deloach
After searching it a bit I think that fish is the Buffalo Sculpin.
Enophrys bison
It's max size is recorded at 14.5 in, Depth 0-65ft.
It should be noted that scientifically, all fish lengths are recorded from snout to caudal, right before where the caudal flares into the fin.
Notable features:
- Wide head w/ short, steep snout and mouth that extends to mid-eye
- Long smooth spine extends from upper cheek with smaller spine below
- Lateral line high on back with large, raised scales; remainder of body unscaled
Description: Drab mottled and blotched shades of earthtone, often greenish gray to greenish or redish brown; fins usaally banded. Can change color or markings to blend with background.
Spinous and soft dorsal fins separated. Eyes often have a radiating star-like pattern.
Pic via Google Images
Buffalo Sculpin