Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Labridae
Etymology: Semicossyphus: Greek, semi = half + Greek, kossyphos, -ou = a kind of fish (Ref. 45335).
Environment / Climate / Range
Marine; reef-associated; depth range 0 - 55 m (Ref. 9311), usually 3 - 30 m (Ref. 9311). Subtropical, preferred 23°C (Ref. 107945); 37°N - 22°N, 123°W - 106°W
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 91.0 cm TL male/unsexed; (Ref. 2850); max. published weight: 16.0 kg (Ref. 2850); max. reported age: 53 years (Ref. 56049)
Eastern Pacific: Monterey Bay in California, USA to Guadalupe Island (off northern central Baja California) and Gulf of California.
Prefer rocky bottom, particularly in kelp beds. Often feed on hard-shelled organisms such as sea urchins, mollusks, lobsters and crabs. Spawning occur during the summer and the eggs are pelagic (Ref. 9311). Live to more than 50 years of age. Each individual functions first as a female but changes to a male at a length of about 30 cm. Pelagic spawners (Ref. 56049). Flesh is white, of good quality and marketed fresh (Ref. 9311). The large teeth can cause serious bite wounds.
A diandric species (Ref. 55367). Transforms to a male at length of about 30.1 cm TL and 7.9 years of age (Ref. 55367). Forms leks during breeding (Ref. 55367). Pelagic spawner (Ref. 56049).
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 336 p. (Ref. 2850)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Traumatogenic (Ref. 13513)
Fisheries: commercial; gamefish: yes; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278
): 3.6 ±0.43 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (tmax=53; tm=5).
Prior r = 0.29, 2 SD range = 0.11 - 0.79, log(r) = -1.24, SD log(r) = 0.5, Based on: 2 tgen, 1 tmax, 1 Fec records
Vulnerability (Ref. 59153
): High vulnerability (55 of 100) .