Klassifizierung / Names
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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.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
; süßwasser benthopelagisch. Tropical
Verbreitung
Territorien | FAO Gebiete | Ökosysteme | Vorkommen | Punkt Karte | Einführungen | Faunafri
Asia: India.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ? range ? - ? cm
Kurzbeschreibung
Bestimmungsschlüssel | Morphologie | Morphometrie
Rückenflossenweichstrahlen (insgesamt) : 8; Afterflossenweichstrahlen: 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).
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven
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)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: nicht kommerziell
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Internet Quellen
Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00282 - 0.01286), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophische Ebene (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Anfälligkeit der Fischerei (Ref.
59153): Low vulnerability (10 of 100).
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