Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Perciformes/Percoidei (Perchs) > Percidae (Perches) > Percinae
Etymology: Gymnocephalus: Greek, gymnos = naked + Greek, kephale = head (Ref. 45335).
More on author: Linnaeus.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; acqua dolce demersale; 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

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Europe: Danube drainage.

Length at first maturity / Size / Peso / Age

Maturity: L_m 14.0, range 12 - 16 cm
Max length : 30.0 cm TL maschio/sesso non determinato; (Ref. 556); common length : 15.0 cm TL maschio/sesso non determinato; (Ref. 556); peso massimo pubblicato: 250.00 g (Ref. 556); Età massima riportata: 15 anni (Ref. 59043)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 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 | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Eggs are attached to stones by females (Ref. 59043).

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp. (Ref. 59043)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 01 January 2008

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesca: di nessun interesse; Pesce da pesca sportiva: si; esca: usually

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
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Food consumptions
Food rations
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Ecology
Ecologia

Population dynamics
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Length-weight rel.
Length-length rel.
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Life cycle
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Egg(s)
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Dinamica popolazioni larvali

Distribution
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Anatomy
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Genetics
Genetica
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References
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Fonti Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 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).

Trophic level (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.

Resilienza (Ref. 120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (tm=2-3; tmax=15).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (42 of 100).

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