Nemateleotris helfrichi Randall & Allen, 1973
Helfrichs' dartfish
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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Nemateleotris helfrichi AquaMaps Data sources: GBIF OBIS |
![Image of Nemateleotris helfrichi (Helfrichs\](/images/thumbnails/jpg/tn_Nehel_u9.jpg "Image of Nemateleotris helfrichi (Helfrichs\")
分类 / 名称 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei > 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.
Eponymy: Dr Philip Helfrich (d: 1927) is a marine biologist. [...] (Ref. 128868), visit book page.
More on authors: Randall & Allen.
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.
Eponymy: Dr Philip Helfrich (d: 1927) is a marine biologist. [...] (Ref. 128868), visit book page.
More on authors: Randall & Allen.
环境：氛围 / 气候带 / 深度上下限 / 分布范围 生态学
海洋 礁区鱼类; 非迁移的 (Ref. 52884); 深度上下限 0 - 90 m (Ref. 33482), usually 40 - ? m (Ref. 9710). 热带; 16°N - 28°S
分布 领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Southeastern Pacific: Fr. Polynesia.
太平洋: 向东到 Tuamoto 岛, 北至琉球群岛。
太平洋: 向东到 Tuamoto 岛, 北至琉球群岛。
大小 / 重量 / 年龄
简单描述 检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 7; 背的软条 (总数) : 29 - 30; 臀棘: 1; 臀鳍软条: 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).
Cross section: compressed.
Cross section: compressed.
Adults occur in relatively deep water. They are 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). Adults feed on zooplanktons (Ref. 89972). Minimum depth reported taken from Ref. 128797.
出现于相当深的水。 发现在陡峭临海礁石的沙子，碎石或坚硬开放底部的小区块上了。 很少发现于少于 40 公尺了与时常成对出现。 一夫一妻的.(参考文献 52884)
出现于相当深的水。 发现在陡峭临海礁石的沙子，碎石或坚硬开放底部的小区块上了。 很少发现于少于 40 公尺了与时常成对出现。 一夫一妻的.(参考文献 52884)
生命周期和交配行为 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Monogamous mating is observed as both obligate and social (Ref. 52884).太平洋: 向东到 Tuamoto 岛, 北至琉球群岛。
主要参考文献
上传您的参考资料 | 参考文献 | 合作者 : Randall, John E. | 合作者
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)
CITES
Not Evaluated
对人类的威胁
无害处的
人类利用
渔业: 商业性; 水族馆: 商业性
FAO - Publication: search | FishSource |
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基于模型的估算
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系统发育多样性指数 (参考文献 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). |
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营养阶层 (参考文献 69278) |
3.4 ±0.45 se; based on food items. |
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渔业脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |
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价格分类 (Ref. 80766) |
Unknown. |