Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk. Temperate; 49°N - 43°N, 8°E - 28°E
Europe: Danube drainage (absent from Danube main river except upper course and stretches with fast current).
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 10.0 cm SL hane/ej könsbestämd; (Ref. 59043)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Diagnosed from its congeners in Black Sea basin by having the following characters: anus situated midway between pelvic and anal origins or closer to anal origin; predorsal scales without longitudinal epithelial crests; caudal peduncle depth 3.0-3.5 times in its length; dorsal and caudal rays with faint dark spots, forming one dark vertical row (Ref. 59043).
Body shape (shape guide): elongated.
Adults inhabit riffles of small, fast-flowing rivers and bottom of large rivers with water velocities of 0.7 m/s and more, stone bottom, in submontane zone. Young individuals prefer areas with slow current and shallow shoreline on sand bottom. Adults are nocturnal and solitary while juveniles are diurnal. Spawning occurs in shallow areas with very high current of about 1 m/s (Ref. 59043). Adults feed on insects and benthic invertebrates (Ref. 556). Are sensitive to pollution and damming; locally threatened, especially in western and southern Danube drainage; extirpated in the upper Danube (Ref. 59043).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Both male and female move to surface or open water to spawn. Eggs drift with current, sink to bottom and stick to substrate (Ref. 59043).
Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp. (Ref. 59043)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: saknar intresse; Akvarium: Offentliga akvarier
Verktyg
Särskilda rapporter
Ladda ner XML
Internet-källor
Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 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=0.00617 (0.00297 - 0.01281), b=3.11 (2.94 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.3 ±0.39 se; based on food items. |
Resiliens (Ref. 120179) |
Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.). |
Sårbarhet i fisket (Ref. 59153) |
Low to moderate vulnerability (30 of 100). 🛈 |