Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Perciformes/Scorpaenoidei
(Scorpionfishes) > Scorpaenidae
(Scorpionfishes or rockfishes) > Scorpaeninae
Etymology: Scorpaena: Latin, scorpaena = a kind of fish, 1706 (Ref. 45335); cocosensis: Named after its type locality, Cocos Island..
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 57 - 92 m (Ref. 53275). Tropical
Eastern Pacific: Cocos Island and Galápagos Arch.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.2 cm SL male/unsexed; (Ref. 53275)
Morphology | Morphometrics
soft rays: 5;
Vertebrae: 24. This species is distinguished by the following characters: D 8; pectoral-fin rays 22; well-exposed scales covers the anteroventral body surface; well-developed interorbital ridges, beginning just behind the nasal spines and diverging anteriorly and posteriorly in dorsal view; lateral margins of frontals diverging posteriorly in the dorsal view; occipital pit shallow with a distinct transverse ridge in front of pit; posterior lacrimal spine is directed ventroanteriorly; suborbital ridge with a small spine; no supplemental preopercular spine; the second preopercular spine reduced; upper posttemporal spine is directed upward; posterior margin of maxilla just reaching level with posterior margin of pupil; posterior tip of pectoral fin reaching level with origin of third dorsal-fin soft ray; head length large (48.8% SL); large orbit diameter (16.9% SL); interorbital space wide between supraocular spine bases (9.2% SL) (Ref. 53275).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Motomura, H., 2004. New species of scorpionfish Scorpaena cocosensis (Scorpaeniformes: Scorpaenidae) from the Cocos Islands, Costa Rica, Eastern Pacific Ocean. Copeia 2004(4):818-824. (Ref. 53275)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 13.4 - 22.4, mean 15.1 °C (based on 15 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01820 (0.00712 - 0.04652), b=3.03 (2.80 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.2 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).