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Cypriniformes (Carps) >
Cyprinidae (Minnows or carps) > Smiliogastrinae
Etymology: gracilus: Name from Latin ‘gracilus’ meaning slim, referring to the thin and strongly compressed body of this fish.
محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع
بوم شناسي
; آب شيرين موجوداتی که در محدوده وسیعی از آبهای آزاد از نزدیک بستر و یا روی کف بستر، در قسمت های میان آبی تا سطح آب و در برخی گونه ها با قابلیت پرواز، زندگی و تغذیه می کنند.. Tropical
Asia: India.
اندازه / وزن / سن
بلوغ: Lm ?  range ? - ? cm
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
شعاع نرم باله پشتي (کل) : 8; شعاع نرم باله مخرجي: 6. This species is distinguished from all its congeners by the following characters: high (body depth at dorsal fin origin 39.1- 40.7 % of SL) and strongly compressed (body width at dorsal fin 14.9- 15.8% of SL) body; barbels are small, not reaching to orbit; anal fin with 6 branched rays and last ray divided to root; lateral line scales 29-30; pre-dorsal scales 11-12 (Ref. 132573).
Cross section: compressed.
This species was collected from a river channel which is 4 m deep and 710 m wide; color of the water at the type locality was little dark. The aquatic stream was with dense aquatic vegetation especially of Utricularia, Hydrilla, Vallisneria and others; moderate population of aquatic ferns and mosses; riparian vegetation was moderate; plants identified were Ammania baccifera, Brassica compestris, Cynodon dactylon, Eclipta alba, Euphorbia hirta, Mollugo hitra, Polygonium barbatum, P. glabrum and others. Protozoans such as Colpidium, Arcella, Eugleana, Amoeba, Paramecium and others were also found. Aquatic insects observed include Cloeon, Micronecta, Microvelia, Helichus. Stenelmis, Gerris. Associated fish species were Anguilla bengalensis, Alia coila, Chela laubuca, Crossocheilus latius, Ctenopharyngodn idella, Chitala chitala, Danio devario, Cirrhinus reba, C. mrigala, Channa marulius, C. punctatus, Gibelion catla, Batasio batasio, Barilus bendelisis, Bagarius bagarius, Chanda nama, C. ranga and others (Ref. 132573).
چرخه زندگی و رفتار جفتگیری
بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | توزاد ( لارو)
Plamoottil, M. and D. Maji, 2020. Systomus gracilus: a new fish (Cypriniformes: Cyprinidae) species from West Bengal. J. Experimental Zool. of India 23(2):1033-1038. (Ref. 132573)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-2 (Global))
خطر برای انسان ها
Harmless
استفاده انسانی
ماهي گيري – شيلات: از بی علاقه گی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
تخمینها بر اساس مدلها
شاخص تنوع فیلوژنتیکی (مرجع 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00603 (0.00281 - 0.01292), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
سطح تروفیک (مرجع 69278) |
2.9 ±0.4 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 to moderate vulnerability (28 of 100). 🛈 |