Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce démersal; pH range: 7.0 - 7.5; dH range: 10 - 15. Temperate; 4°C - 18°C (Ref. 2059); 49°N - 43°N, 8°E - 30°E
Europe: Danube drainage.
Length at first maturity / Taille / Poids / Âge
Maturity: Lm 14.0, range 12 - 16 cm
Max length : 30.0 cm TL mâle / non sexé; (Ref. 556); common length : 15.0 cm TL mâle / non sexé; (Ref. 556); poids max. publié: 250.00 g (Ref. 556); âge max. reporté: 15 années (Ref. 59043)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 17 - 19. Distinguished from its congeners by having unique characters of 3 discontinuous dark stripes along flank and 55-62 + 4-5 scales along lateral line. Differs further from other species of the genus by having 17-19 dorsal spines (Ref. 59043).
Adults occur in groups in open sand and mud bottom of large rivers with moderate current. Nocturnal, feeding on small invertebrates, especially molluscs, usually crepuscular but may also feed at daytime. Larvae are benthic (Ref. 59043).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
Eggs are attached to stones by females (Ref. 59043).
Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp. (Ref. 59043)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt; pêche sportive: oui; appât: usually
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00476 - 0.02414), b=3.05 (2.86 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.4 ±0.43 se; based on food items.
Generation time: 5.5 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Résilience (Ref.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (tm=2-3; tmax=15).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100).
