Enophrys bison
Bony-plated bottom fish found on rocky reefs in British Columbia, sitting still in 6 to 12C water year-round.
Squat, heavily armoured body with bony ridges running along the back and a wide, flattened head that gives it a boxy, almost prehistoric look. Colouration is mottled brown, olive and cream, blending closely with rocky and gravel bottoms. Grows to around 26 cm, and divers almost always find it motionless on the seafloor rather than swimming in open water. Look for the raised bony plates along the dorsal ridge, which separate it from smoother-bodied sculpins and gobies sharing the same rock.
Spends most of its time parked on rock, gravel or shell bottom, relying on its mottled colouring to disappear against the substrate rather than fleeing. Divers typically spot it by scanning the bottom closely rather than catching movement, since it tends to hold still even when approached. It is generally logged as an uncommon sighting, so patient, slow bottom-time searches on rocky reef pay off more than a quick swim-by.
Those bony ridges and plates along its back are a real skeletal feature, not just skin texture, giving it a armoured look shared by few other nearshore fish in the region.
No clear seasonal pattern shows up in sighting data, and its comfort range of roughly 6.4 to 12.1C matches cool Pacific Northwest water year-round, so any month is reasonable for a look.
Most consistently logged along British Columbia, Canada, with a strong scatter of sightings through the Pacific Northwest region of the United States. Divers doing rocky reef and pier dives in these areas have the best odds, though it turns up as an uncommon or rare find rather than a guaranteed sighting.
Mapping where Buffalo Sculpin is logged…
British Columbia, Canada is the strongest region for sightings, with additional records from the Pacific Northwest coast of the United States. Look for rocky or gravel bottoms rather than open sand or reef.
Sightings don't show a strong seasonal pattern, and the species tolerates the cool 6 to 12C water typical of the Pacific Northwest year-round, so there's no single best month to plan around.
Look for a squat, bony-plated fish around 26 cm long, mottled brown and cream, sitting motionless on rock or gravel. The raised ridges along its back and wide flat head are the key giveaways.
They typically reach around 26 cm in length, making them a small to medium-sized bottom-dwelling fish easy to overlook against rocky terrain.
No, they're not considered dangerous to divers. They stay still on the bottom and pose no threat if you simply observe without handling.
Site and sighting data is aggregated from diver logs, iNaturalist and GBIF. For taxonomy and conservation status:
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