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The calico rockfish is a small, colorful rockfish species that does not exceed 10 in. in length or 2 pounds in weight.
Distribution, Stock Structure and Migration.
Calico rockfish range from Sebastian Viscaino Bay, Baja California to San Francisco. They inhabit a depth range of 60 to 840 ft.
Age and Growth
Calico rockfish have been aged to a maximum of 11-12 yr.
Reproduction, Fecundity and Seasonality
Male calico rockfish first become sexually mature at age seven. Female calico rockfish become sexually mature at age nine. Spawning occurs in southern California between January and May, with peak spawning occurring in February. Fertilized eggs are present in November and December. The larval stage lasts from less than four weeks to two months.
Natural Mortality
Estimates for natural mortality were not available for calico rockfish.
Diseases
No information is available on diseases in calico rockfish.
Predator/Prey Relationships
Juvenile calico rockfish feed on zooplankton such as copepods, barnacle cyprids, and larval fish. Adults feed on larger crustaceans such as euphausiids, fishes, and cephalopods. Larger rockfish species, lingcod, cabezon, and salmon prey upon adult calico rockfish. Sea birds and dolphins have also been known to feed on calico rockfish.
Competition
Calico rockfish probably compete with other foraging rockfish species and other finfishes with similar food habits.
Critical Habitat
Juvenile calico rockfish are found in areas of soft sand-silt sediment, and on artificial reefs. Adult calico rockfish inhabit rocky shelf areas where there is a mud-rock or sand-mud interface with fine sediments. They are associated with areas of high and low relief, including artificial reefs.
Status of Stocks
There are currently no estimates of abundance for calico rockfish in California. Because of the relatively small size of adult calico rockfish, they are not usually targeted by either sport or commercial fishermen, but are caught incidentally when other finfish species are targeted. Calico rockfish frequently appear as a bycatch in prawn trawls in southern California, and are caught by sport anglers on Commercial Passenger Fishing Vessels (CPFVs) and private boats when they are fishing for other, larger benthic species.