Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Sebastidae
(Rockfishes, rockcods and thornyheads) > Sebastolobinae
Etymology: Trachyscorpia: Greek, trachys, -eia, y = rough + Greek, skorpis, idos = a kind of fish without identification (Ref. 45335); osheri: Named for Bernard A. Osher, fisherman, amateur ichtyologist and supporter of research and education. More on author: McCosker.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 402 - 515 m (Ref. 75873). Tropical
Southeast Pacific:: Galápagos Islands
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.7 cm SL male/unsexed; (Ref. 75873)
Morphology | Morphometrics
soft rays: 5 - 6;
Vertebrae: 25. This species is distinguished by D XII, 9; vertebrae 25; presence of tympanic spines; well-developed upper-jaw lip, covering most of premaxillary band laterally; scales on lateral surface of maxilla absent; longitudinal scale rows about 59-60; second pelvic fin ray the longest; deeply notched pectoral fin, length of 11th ray 65% of that of 17th ray; deep body, its depth 37-39% SL; large orbit diameter, 14-15%SL; slightly convex head profile; no swimbladder; color reddish with white and black markings and smudges on portions of head, dorsal surface of flanks and fins (Ref. 75873).
Observed to inhabit boulder and sediment-laden bottoms, sitting along 30°-45° slopes (Ref. 75873).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
McCosker, J.E., 2008. Trachyscorpia osheri and Idiastion hageyi, two new species of deepwater scorpionfishes (Scorpaeniformes: Sebastidae, Scorpaenidae) from the Galápagos Islands. Proc. Calif. Acad. Scie. 59(3):113-123. (Ref. 75873)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 4.8 - 14, mean 10.9 (based on 78 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (37 of 100) .