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Alionematichthys riukiuensis (Aoyagi, 1954)

Bigeye cusk
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Alionematichthys riukiuensis   AquaMaps   Data sources: GBIF OBIS
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Image of Alionematichthys riukiuensis (Bigeye cusk)
Alionematichthys riukiuensis
Picture by Winterbottom, R.

Papua New Guinea 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/pp.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/PNG/png.htm
Occurrences: Occurrences Point map
Main Ref: Møller, P.R. and W. Schwarzhans, 2008
National Database:

Common names from other countries

Robust cusk, Ryukyu-itachiuo, 大身双线鼬鳚, ... more

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

> Ophidiiformes (Cusk eels) > Dinematichthyidae (Viviparous brotula)
Etymology: Alionematichthys: Name from Latin alius meaning the other or different, and nematichthys, the stem of the genus name Dinematichthys, to which this genus is most similar..

Environment: milieu / climate zone / depth range / distribution range 生態学

海 関連する礁; 深さの範囲 0 - 10 m (Ref. 90102).   Tropical

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Western Pacific: Ryukyu Islands, Fiji and eastern Australia. More recently reported from Ouvéa Atoll, Loyalty Islands (Ref. 13236).

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 7.9 cm SL オス/雌雄の選別がない; (Ref. 13278)

簡単な記述 検索表 | 形態学 | 形態計測学

背面の脊椎 (合計) : 0; 背鰭 (合計) : 77 - 92; 臀鰭: 59 - 72; 脊つい: 41 - 44. This species is distinguished by the following characters: D 77-92; A 59-72; moderately large eyes (2.5-3.0% SL); moderately slender, massive body, snout with many cirri; cheeks with scales and a large scale patch on opercular spine(6-17), with large specimens having a few scales below opercular spine; with upper preopercular pore; outer pseudoclasper broad-based, not very large, not extending beyond hood in resting position; the inner pseudoclasper is not much smaller than the outer one, equal anterior and posterior lobes, anterior lobe broadly connected to anterior rim of outer pseudoclasper; slender otolith, its length to height 2.2-2.4, with gently curved dorsal rim; otolith length to sulcus length 1.6-1.7, ostium length to caudal length 3.5-4.0; vertebrae 11-12 + 30-32 = 41-44 (Ref. 81230).

生物学     用語集 (例 epibenthic)

Uncommon species (Ref. 34024), inhabiting coral reefs (Ref. 13278). Cryptic, solitary inhabitant of shallow water (<10 m) (Ref 90102).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999. Ophidiiform fishes of the world (Order Ophidiiformes). An annotated and illustrated catalogue of pearlfishes, cusk-eels, brotulas and other ophidiiform fishes known to date. FAO Fish. Synop. 125(18):178p. Rome: FAO. (Ref. 34024)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 15 August 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




Human uses

水産業: 興味がない
FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 24.9 - 29.3, mean 28.6 (based on 2261 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5005   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
栄養段階 (Ref. 69278):  3.3   ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  低い, ４．５年～１４年の倍増期間の最小個体群 (Assuming Fec < 100).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).