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California Sheephead

(Semicossyphus pulcher)
Population status in the wild: Least Concern

The Sheephead is a species of wrasse native to the rocky reefs and kelp forests along the coasts of Southern California and Baja California, Mexico. Known for its distinct appearance, the Sheephead has a stout, elongated body with a pronounced, blunt head that resembles a sheep’s, hence the name. Its coloration varies, with adult males typically displaying a vibrant reddish-pink body with black markings, while females and juveniles have more subdued hues, often a mix of browns, grays, and pinks. They can grow up to 24 inches long and weigh up to 10 pounds, though the average size is around 18 inches.
Sheephead are opportunistic predators and omnivores, feeding on a diverse diet of mollusks (such as sea urchins), crustaceans, and smaller fish. They are particularly known for their strong jaws and teeth, which are capable of crushing hard-shelled invertebrates. This makes them an important part of the ecosystem, as they help control the populations of sea urchins and other invertebrates that graze on kelp, thus playing a key role in maintaining the health of kelp forests. In aquariums, they are often fed a diet of crustaceans, mollusks, and other protein-rich foods.

One of the most interesting features of the Sheephead is its sexual dimorphism and sex change behavior. Male Sheephead, which are more brightly colored, can change sex from female to male later in life, typically between 3 to 5 years old. This transformation is linked to social and environmental factors, and males are usually dominant in social groups.

Sheephead can live up to 30 years in the wild, although their average lifespan is 10 to 15 years. They are primarily solitary but may aggregate in large schools during the breeding season. Despite being targeted by commercial and recreational fishing, the Sheephead population remains stable and is considered to be of least concern.

Fun Facts:
The species is known for its ability to change sex, with the process known as protandrous hermaphroditism, where individuals begin life as females and later transition to males.

Sheephead have a reputation as "kelp forest gardeners" due to their role in controlling herbivorous invertebrate populations, particularly sea urchins, which helps protect kelp ecosystems.

ABOUT US >

Welcome to Cabrillo High School Aquarium, a student run program. Here at Cabrillo High School, we encourage growth and development within our students. As such our directory as well as our program are constantly evolving and changing, similar to the natural world.

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This site was last updated: 04/29/2025

CONTACT >

T: (805) 742-2888

E: eisen.greg@lusd.org

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