Also known as Bullhead, Blue Cod, Giant Marbled Sculpin
Cabezon are massive, scaleless sculpins that spend their adult lives camouflaged against kelp forest floors and rocky reefs, ambushing prey with an explosive burst from their outsized mouths. Males take sole responsibility for the eggs, aggressively guarding the colorful clutches against crabs, sea stars, and other fish until they hatch. Their flesh is famously tinted turquoise or bright blue by the bile pigment biliverdin, though it turns pure white once cooked.
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & prey
Dungeness Crab
Pacific Abalone
Sand Shrimp
Predators
Harbor Seal
Lingcod
California Sea Lion
ThreatsOverfishing, habitat degradation, and warming coastal sea temperatures
HabitatsTemperate rocky reefs, kelp forests, and coastal tide pools
Life span14–19 years
Size / weightNot available
Classification
OrderScorpaeniformes
FamilyCottidae
GenusScorpaenichthys
SpeciesScorpaenichthys marmoratus
Range & activity
Range data is not available yet.
Safe observation
Interaction riskHigh
Low
Moderate
High
Very high
Why interaction risk is high
The roe is toxic to humans and pets if eaten; never ingest the eggs.
Why it is dangerous
Cabezon roe contains an unidentified phospholipid toxin that resists heat and causes severe vomiting, diarrhea, abdominal cramps, and dehydration in humans and pets.
How to recognize a risky encounter
Recognizable by an extraordinarily broad head, prominent fleshy flap above each eye, scaleless marbled skin, and stout, spiny dorsal fins.
What to do
If preparing a harvested fish, discard all internal viscera and egg masses immediately, washing hands and prep surfaces thoroughly.
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