Teleostei (teleosts) >
Perciformes/Scorpaenoidei (Scorpionfishes) >
Sebastidae (Rockfishes, rockcods and thornyheads) > Sebastolobinae
Etymology: Trachyscorpia: Greek, trachys, -eia, y = rough + Greek, skorpis, idos = a kind of fish without identification (Ref. 45335); longipedicula: The specific name longipedicula is derived from the Latin longus meaning long, and pediculus meaning foot, in reference to the long pelvic-fin spine and rays, and first anal-fin spine, compared with the short spines and rays of T.
More on authors: Motomura, Last & Yearsley.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic; depth range 620 - 1080 m (Ref. 58335). Subtropical; 36°S - 39°S, 46°E - 52°E (Ref. 58335)
Indian Ocean: Currently known only from the South-West Indian Ridge, southwestern Indian Ocean, between ca. 36° and 39°S, and 46° and 52°E (ca. 1,700 km south of southern tip of Madagascar), at depths of 620-1080 m. Trachyscorpia longipedicula co-occurs with T. eschmeyeri (Ref. 58335).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 21.9 cm SL male/unsexed; (Ref. 58335)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 13; Vertebrae: 26. A species of Trachyscorpia with the following combination of characters: tympanic spines present; upper-jaw lip well developed, covering premaxillary tooth band laterally; no scales on lateral surface of maxilla; 50–53 scale rows in longitudinal series; second pelvic-fin soft ray long (23.1–29.2% SL, mean 25.5%), longer than upper-jaw length; body deep (depth 37.9–40.5% of SL, mean 39.2%); orbit diameter large (15.1–18.1% of SL, mean 16.3%); pelvic-fin spine long (14.8–17.1% of SL, mean 15.6%); first anal-fin spine long (8.0–9.4% of SL, mean 8.5%); head profile convex; swimbladder present; head and trunk whitish with two blackish bands from eye on head, and 4 blackish saddles on body in preserved specimens.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Motomura, H., P.R. Last and G.K. Yearsley, 2007. Two new species of the scorpionfish genus Trachyscorpia (Sebastidae: Sebastolobinae) from the southern Indo-West Pacific, with comments on the distribution of T. eschmeyeri. Zootaxa 1466:19-34. (Ref. 58335)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00407 - 0.02046), b=3.09 (2.88 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.7 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (17 of 100).
