Classification / Names
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Argentiniformes (Marine smelts) >
Microstomatidae (Pencil smelts)
Etymology: ahlstromi: Named for E.H. Ahlstrom.
Eponymy: Fridtjof Nansen (1861–1930) was a Norwegian explorer, scientist, diplomat and later recipient of the Nobel Peace Prize. [...] Dr Elbert Halvor Ahlstrom (1910–1979) was an ichthyologist and biologist who spent more than four decades working for the National Fisheries Service. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
पारिस्थितिकी
समुद्री बैथीपिलाजिक; गहराई सीमा 0 - 754 m (Ref. 5123). Deep-water; 35°N - 20°N
Indo-West Pacific.
आकार / वज़न / Age
Maturity: Lm ? range ? - ? cm
Max length : 9.5 cm SL पुल्लिंग / अलिंग; (Ref. 5123)
Short description
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
पृष्ठीय सौफट रेज़ (सम्पूर्ण) : 8 - 9; ऐनल सौफट रेज़: 7 - 8; जानवरों की रीड़ का जोड़: 35 - 36. Head relatively large than body; eye large. Branchiostegal rays 3. Ratio of caudal peduncle length to caudal peduncle depth less than 1.5 (Ref. 5123).
The holotype which is about 9.5 cm SL is an adult bearing eggs (Ref. 5123).
Life cycle and mating behavior
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा
Kawaguchi, K. and J.L. Butler, 1984. Fishes of the genus Nansenia (Microsomatidae) with descriptions of seven new species. Los Angeles County Mus. Contr. Sci. 352:1-22. (Ref. 5123)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
साधन
Special reports
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इंटरनेट स्रोत
Estimates based on models
Phylogenetic diversity index (Ref.
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).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
