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Tongaichthys robustus Nakamura & Fujii, 1983

Tonga escolar
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Native range | All suitable habitat | Point map | Year 2050
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Tongaichthys robustus   AquaMaps   Data sources: GBIF OBIS
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Image of Tongaichthys robustus (Tonga escolar)
Tongaichthys robustus
Picture by FAO

Australia country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority: http://www.csiro.au/
Occurrences: Occurrences Point map
Main Ref: Nakamura, I. and N.V. Parin, 1993
National Database:

Common names from other countries

Escolier tonga, Escolar de Tonga, سمك جِراب طونغا, ... more

Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa

> Scombriformes (Mackerels) > Gempylidae (Snake mackerels)
Etymology: Tongaichthys: From the Tonga island in the Pacific ocean + Greek, ichthys = fish.

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

Θαλασσινό(ά) βαθυπελαγικό(ς); εύρος βάθους 288 - 312 m (Ref. 6181).   Deep-water; 12°S - 27°S, 144°E - 174°W (Ref. 6181)

Κατανομή Χώρες | Περιοχές FAO | Οικοσυστήματα | Παρουσίες | Point map | Εισαγωγές | Faunafri

Pacific Ocean: Several specimens (38 individuals) were reported from the Tonga Ridge; around Fiji; 1 specimen from off Flinders Reef, Queensland (17°33'S, 149°46'E, CSIRO no. H1185-01).

Μέγεθος / Βάρος / Age

Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm SL αρσενικό/απροσδιόριστο; (Ref. 9784)

Short description Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία

Ραχιαίες άκανθες (συνολικά) : 16 - 17; Μαλακές ραχιαίες ακτίνες (συνολικά) : 14 - 17; Εδρικές άκανθες: 1; Μαλακές εδρικές ακτίνες: 14 - 16; Σπόνδυλοι: 33. Head relatively large. Scales on cheeks enlarged, elongate and slightly overlapping. Color is dark brown above, slightly paler below.

Βιολογία     Γλωσσάρι (π.χ. epibenthic)

Probably mesopelagic or mesobenthopelagic (Ref. 6181).

Life cycle and mating behavior Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες

Main reference Upload your references | Αναφορές | Συντονιστής : Parin, Nikolay V. | Συνεργάτες

Nakamura, I. and N.V. Parin, 1993. FAO Species Catalogue. Vol. 15. Snake mackerels and cutlassfishes of the world (families Gempylidae and Trichiuridae). An annotated and illustrated catalogue of the snake mackerels, snoeks, escolars, gemfishes, sackfishes, domine, oilfish, cutlassfishes,. scabbardfishes, hairtails, and frostfishes known to date. FAO Fish. Synop. 125(15):136 p. (Ref. 6181)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FishSource |

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Trophic ecology
Τροφικά αντικείμενα
Diet compositions
Food consumptions
Food rations
Θηρευτές
Ecology
Οικολογία
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Αναπαραγωγή
Maturities
Fecundities
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Διαδικτυακές πηγές

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Estimates based on models

Preferred temperature (Ref. 115969): 4.6 - 9.4, mean 6.1 (based on 78 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00426 - 0.02456), b=3.00 (2.80 - 3.20), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Τροφικό Επίπεδο (Ref. 69278):  3.9   ±0.6 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref. 120179):  Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (Assuming tmax>3).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (27 of 100).