China rockfish (Sebastes nebulosus)

China Rockfish
China rockfish
Category: Fish
Related species groups: Rockfish
State status: Candidate
Vulnerability to climate change (More details)

Moderate-
High

Commonly caught by recreational harvesters off the northern Washington coast.

State record

WeightAnglerLocationDate Caught
4.19 lbs Steven Ripley Duncan Rock July 11, 1989

See all sportfish records

Description and Range

Physical description

The body of the China rockfish is blue or black in color, mottled with yellow and some white. A very obvious yellow stripe, starting on the dorsal fin at about the third spine and running into and along the lateral line, is characteristic. The head spines are thick and the parietal ridges are very high and thick. This species has a relatively small mouth.

China rockfish can grow up to 45 cm (18 in) in length. Maximum age is at least 79 years old.

Geographic range

China rockfish are found from Kechemak Bay, Cook Inlet, Alaska, to San Nicolas Island in southern California. They are found at water depths between 3 and 128 m (10-420 ft). This is a solitary species inhabiting high-energy, high-relief rocky outcrops with numerous crevices. They are very territorial and rarely move less than 10 m (33 ft) from their home site.

Climate vulnerability

Sensitivity to climate change

Moderate

The main sensitivity of China rockfish to climate change is likely to stem from changes to their prey base. Warmer ocean conditions could lead to decreases in prey (e.g., zooplankton) for both juveniles and adults, prompting decreases in adult fecundity and juvenile survival. Additionally, nearshore habitat loss due to sea level rise could impact juvenile survival, as juveniles tend to use nearshore habitat as nursery and foraging area. Deepwater coral habitat, which many adult rockfish use, may also decrease due to acidification, further reducing available habitat. Decreased oxygen levels may have direct physiological effects on China rockfish, leading to higher levels of mortality across various life stages. Due to their long life cycles and generation times, adults may be able to persist through short term pulses of negative ocean conditions (e.g., years with warmer sea surface temperature), though conversely, their low productivity could make it difficult for populations to recover from climate-related declines.

Confidence: Moderate

Exposure to climate change

Moderate-
High

  • Increased ocean temperatures
  • Sea level rise
  • Declines in pH
  • Decreased oxygen
Confidence: Moderate

Regulations

Rules and Seasons

Recreational harvest within Puget Sound has been closed.

Conservation

This species is identified as a Species of Greatest Conservation Need (SGCN) under the State Wildlife Action Plan (SWAP). SGCN-classified species include both those with and without legal protection status under the Federal or State Endangered Species programs, as well as game species with low populations. The WDFW SWAP is part of a nationwide effort by all 50 states and five U.S. territories to develop conservation action plans for fish, wildlife and their natural habitats—identifying opportunities for species' recovery before they are imperiled and more limited.
This species is identified as a Priority Species under WDFW's Priority Habitat and Species Program. Priority species require protective measures for their survival due to their population status, sensitivity to habitat alteration, and/or recreational, commercial, or tribal importance. The PHS program is the agency's main means of sharing fish and wildlife information with local governments, landowners, and others who use it to protect priority habitats for land use planning.