Nemateleotris helfrichi, Helfrichs' dartfish : aquarium

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Nemateleotris helfrichi Randall & Allen, 1973

Helfrichs' dartfish
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Nemateleotris helfrichi   AquaMaps   Data sources: GBIF OBIS
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Image of Nemateleotris helfrichi (Helfrichs\
Nemateleotris helfrichi
Picture by Randall, J.E.

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

> Gobiiformes (Gobies) > Microdesmidae (Wormfishes) > Ptereleotrinae
Etymology: Nemateleotris: Name from the combination of the Greek 'nemat' meaning thread, and the eleotrid genus Eleotris.;  helfrichi: Named for Dr. Philip Helfrich, Associate Director of the Hawaii Institute of Marine Biology of the University of Hawaii and Director of the Enewetak Marine Biological Laboratory..
More on authors: Randall & Allen.

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

関連する礁; 深さの範囲 0 - 90 m (Ref. 33482), usually 40 - ? m (Ref. 9710). Tropical; 16°N - 28°S

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

Southeastern Pacific: Fr. Polynesia.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm TL オス/雌雄の選別がない; (Ref. 9710)

簡単な記述 形態学 | 形態計測学

背面の脊椎 (合計): 7; 背鰭 (合計): 29-30; 肛門の骨 1; 臀鰭: 25 - 27. This species is distinguished by the following characters: D VI, I,30 (I,29-30); A I,26 (I,25-27); pectoral-fin rays 20 (20-21); pelvic-fin rays I,5; segmented caudal-fin rays 17; upper procurrent caudal-fin rays 9 (9-14); lower procurrent caudal-fin rays 12 (11-12); total caudal-fin rays 37-43; gill rakers 6 (5-7) + 17 (17-18) = 23 (22-24). Colouration: elevated part of first dorsal fin blue on anterior edge; median fins are pale yellowish green, caudal fin no markings, outermost edge of second dorsal and anal fin tipped with a yellow or orange spot, one in each interradial membrane space, the spots sometimes coalescing; when alive the body is lavender to lilac; pelvic fins black-tipped; dorsal edge of iris with a black mark at 1 o’clock position, sometimes continuing until interorbital space as a short streak; maxilla black (when alive and preserved); snout bright pink in life (Ref. 128599).

生物学     用語集 (例 epibenthic)

Occurs in relatively deep water. Found over small patches of sand, rubble, or hard open bottoms of steep seaward reefs. Rarely found in less than 40 m and frequently occurs in pairs. Monogamous (Ref. 52884). Feeds on zooplanktons (Ref. 89972). Minimum depth reported taken from Ref. 128797.

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

Monogamous mating is observed as both obligate and social (Ref. 52884).

主な参考文献 Upload your references | 参考文献 | コーディネーター : Randall, John E. | 協力者

Tea, Y.-K. and H.K. Larson, 2023. Synopsis of the ptereleotrine goby genus Nemateleotris, with description of a new species from the western and central Pacific Ocean (Teleostei: Gobiidae). Raffles Bulletin of Zoology 71:248-266. (Ref. 128599)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 12 March 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水族館・水槽: 商業
FAO - Publication: search | FishSource |

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共通名の
類義語
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捕食動物
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成熟
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シガテラ(食中毒の名前)
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Otoliths

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Estimates based on models

Preferred temperature (Ref. 123201): 25.7 - 29, mean 27.8 °C (based on 13 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5625   [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):  3.4   ±0.45 se; based on food items.
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).