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Ophidiiformes (Cusk eels) >
Bythitidae (Livebearing brotulas)
Etymology: Saccogaster: Latin, sacculus = small bag + Greek, gaster = stomach (Ref. 45335); nikoliviae: Named for the senior author’s grandchildren, Nikolaj and Olivia.
Eponymy: Nikolaj and Olivia are two of the grandchildren of the senior author, Jørgen Nielsen (Also see Nielsen, JG). (Ref. 128868), visit book page.
محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع
بوم شناسي
دريايي موجوداتی که در اعماق زیر 200 متر زندگی و تغذیه می کنند; تغييرات عمق ? - 407 m (Ref. 93007). Tropical
Eastern Indian Ocean: Australia.
اندازه / وزن / سن
بلوغ: Lm ?  range ? - ? cm
Max length : 5.0 cm SL جنس نر / بدون خواص جنسي; (Ref. 93007); 6.9 cm SL (female)
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
شعاع نرم باله پشتي (کل) : 80 - 84; شعاع نرم باله مخرجي: 48 - 52; مهره ها: 52 - 53. This species is distinguished from its congeners by having predorsal scales and by the following set of characters: pair of frontal spines above and behind eyes is more or less distinct and a median, sub-dermal, cartilaginous, ethmoidal spine in front of eyes; numerous neuromasts found below translucent head-skin arranged in four distinct clusters; with scales on body; anterior arch with 3 long gill rakers, 3-5 times length of filaments; prolonged pectoral peduncle; palatines with 2- tooth rows; lower angle of preoperculum with an antero-ventrally directed spine; vertebrae, precaudal 12-13, total 52-53; fin rays, D 80-84, A 48-52, pectoral 17-18; otolith length to height, 1.9, otolith length to colliculum length, 2.8-3.1 (Ref. 93007).
Body shape (shape guide): elongated; Cross section: oval.
This viviparous species occurs on the upper continental slope. Female specimens have extended ovaries and eggs up to 0.5 mm in diameter; no embryos were observed. A 5.0 cm SL male paratype had a ripe testes and well developed intromittent organ (Ref. 93007).
چرخه زندگی و رفتار جفتگیری
بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | توزاد ( لارو)
Nielsen, J.G., W. Schwarzhans and D.M. Cohen, 2012. Revisions of Hastatobythites and Saccogaster (Teleostei, Bythitidae) with three new species and a new genus. Zootaxa 3579:1-36. (Ref. 93007)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-2 (Global))
خطر برای انسان ها
Harmless
استفاده انسانی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
تخمینها بر اساس مدلها
شاخص تنوع فیلوژنتیکی (مرجع 82804) |
PD50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00468 (0.00186 - 0.01174), b=3.03 (2.81 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
سطح تروفیک (مرجع 69278) |
3.3 ±0.5 se; based on size and trophs of closest relatives |
جهندگی (مرجع 120179) |
زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.). |
آسیبپذیری ماهیگیری (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |