Optivus agastos, Violet roughy

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Optivus agastos Gomon, 2004

Violet roughy
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Optivus agastos   AquaMaps   Data sources: GBIF OBIS
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Image of Optivus agastos (Violet roughy)
Optivus agastos
Picture by Graham, K.

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Trachichthyiformes (Roughies) > Trachichthyidae (Slimeheads)
Etymology: Optivus: Latin, optivus, -a-um = chosen;  agastos: Name from a Greek word meaning 'near kinsman', referring to its similarity and presumed close relationship to Trachichthys elongatus Günther, 1859..

Environment: milieu / climate zone / depth range / distribution range Ecologie

marien rifbewoner; diepte 1 - 146 m (Ref. 76814). Temperate

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Southwest Pacific : Australia and New Zealand (Ref. 86942).

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 9.5 cm SL mannelijk / geslacht onbekend; (Ref. 76814)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 4 - 5; Dorsale zachte stralen (totaal): 10-11; Anale stekels 3; Anale zachte stralen: 9 - 10; Wervels: 26. This species is characterized by the following: gill rakers 22-25 (modally 23); lateral profile of nape and head nearly straight, distinctly angled downward in front of dorsal fin; snout tip rounded, often projecting slightly in front of upper jaw; depth of head at vertical through upper end of gill opening 2.9-3.2 times in SL; snout length 1.6-2.7 times in eye diameter; inner row of teeth on premaxilla is noticeably longer than others; caudal peduncle relatively short and deep, its depth 0.9-1.3 times in length; dorsal and anal fins are relatively low, third segmented dorsal-fin ray 3.5-4.2 times in SL, first anal-fin ray 5.2-6.3 times in SL; body color greenish brown on back, silvery below; fins almost uniformly pink, though slightly dusky tips to caudal-fin lobes lasting in recently preserved large specimens (Ref. 76814).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

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Gomon, M.F., 2004. Two new species of roughy (Trachichthyidae: Optivus) from coastal waters of southern Australia. Rec. Aust. Mus. 56:173-178. (Ref. 76814)

Status op de Rode Lijst van het IUCN (Ref. 130435)

  Niet bedreigd (LC) ; Date assessed: 26 December 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

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Estimates based on models

Preferred temperature (Ref. 123201): 14.6 - 24.3, mean 17 °C (based on 314 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00413 - 0.02653), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.5   ±0.6 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
Nutrients (Ref. 124155):  Calcium = 24.1 [9.5, 61.7] mg/100g; Iron = 0.227 [0.095, 0.474] mg/100g; Protein = 18.2 [16.9, 19.5] %; Omega3 = 0.525 [0.191, 1.375] g/100g; Selenium = 5.79 [2.50, 13.42] μg/100g; VitaminA = 167 [41, 665] μg/100g; Zinc = 0.892 [0.521, 1.477] mg/100g (wet weight);