分类 / Names
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Teleostei >
Blenniiformes (Blennies) >
Dactyloscopidae (Sand stargazers)
Etymology: Dactyloscopus: Greek, daktylos = finger + Greek, skopein = to look (Ref. 45335).
More on author: Gill.
Environment: milieu / climate zone / 深度上下限 / distribution range
生态学
海洋 居于水底的; 深度上下限 0 - 45 m (Ref. 11482). 熱帶
Eastern Pacific Ocean: from the Gulf of California and southwestern tip of Baja California northward to Bahia Santa Maria. Former subspecies D. pectoralis fallax (Mexico to Ecuador, including Cocos Island) and D. pectoralis insulatus (Revillagigedo Islands) in Ref. 11482 were elevated to species level.
東太平洋: 三個亞種辨認出: 鰭指鰧〔Dactyloscopus pectoralis〕 pectoralis 從加州灣與下加利福尼亞的外部海岸 , 來自 Sinaloa ，墨西哥到厄瓜多的 鰭指鰧〔Dactyloscopus pectoralis〕 fallax, 包括可可島 , 與 鰭指鰧〔Dactyloscopus pectoralis〕 insulatus 從雷維拉吉哥多島。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 5.2 cm TL 雄鱼/尚未辨别雌雄; (Ref. 11482)
Distinguished from D. fallax and D. insulatus by having the following characters: scales absent above the lateral line; upper lip fimbriae, modally 9; preopercular canal pores, modally 5; unbranched labial fimbriae (Ref. 82814).
Body shape (shape guide): elongated.
Found on sandy bottoms near reefs (Ref. 37955). Feeds on small fishes and invertebrates (Ref. 11482). Minimum depth from Ref. 58018.
栖息于在礁附近的砂质底部了。 (参考文献 37955) 吃小鱼与无脊椎动物。
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
東太平洋: 三個亞種辨認出: 鰭指鰧〔Dactyloscopus pectoralis〕 pectoralis 從加州灣與下加利福尼亞的外部海岸 , 來自 Sinaloa ，墨西哥到厄瓜多的 鰭指鰧〔Dactyloscopus pectoralis〕 fallax, 包括可可島 , 與 鰭指鰧〔Dactyloscopus pectoralis〕 insulatus 從雷維拉吉哥多島。
Allen, G.R. and D.R. Robertson, 1994. Fishes of the tropical eastern Pacific. University of Hawaii Press, Honolulu. 332 p. (Ref. 11482)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-1)
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Estimates based on models
Preferred temperature (参考文献
123201): 20.6 - 28.4, mean 24.7 °C (based on 56 cells).
Phylogenetic diversity index (参考文献
82804): PD
50 = 0.5000 [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).
营养阶层 (参考文献
69278): 4.0 ±0.61 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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