Gymnocephalus schraetser, Schraetzer : gamefish, bait

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Gymnocephalus schraetser (Linnaeus, 1758)

Schraetzer
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Gymnocephalus schraetser
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Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (strålfeniga fiskar) > Perciformes (Perch-likes) > 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 Ekologi

; stvatten bottenlevande; 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

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Europe: Danube drainage. In Appendix III of the Bern Convention (protected fauna).

Length at first maturity / Size / Vikt / Age

Maturity: Lm ?, range 12 - 16 cm
Max length : 30.0 cm TL hane/ej könsbestämd; (Ref. 556); common length : 15.0 cm TL hane/ej könsbestämd; (Ref. 556); publicerad maxvikt: 250.00 g (Ref. 556); rapporterad maxålder: 15 år (Ref. 59043)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 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).

Biologi     Ordlista (t.ex. epibenthic)

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 Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

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

Main reference Upload your references | referenser | Koordinator | Medarbetare

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. 120744)

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

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: saknar intresse; sportfisk: ja; bete: usually
FAO(Publication : search) | FishSource |

Ytterligare information

Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
Stocks
Ekologi
Föda
Födoslag
Födointag
Näringsinnehåll
Populärnamn
synonymer
Metabolik
Predatorer
Ekotoxikologi
Reproduktion
Könsmognad
Lek
Spawning aggregation
Fecundity
Ägg
Egg development
Age/Size
Tillväxt
Length-weight
Length-length
Length-frequencies
Morfometri
Morfologi
Larver
Larvdynamik
Rekrytering
Abundans
referenser
Vattenbruk
Vattenbruksprofil
Avelslinjer
Genetik
Allelfrekvenser
Ärftlighet
Sjukdomar
Behandling
Mass conversion
Medarbetare
Bilder
Stamps, Coins Misc.
Ljud
Ciguatera
Hastighet
Simsätt
Gälyta
Otoliths
Hjärnstorlek
Syn

Verktyg

Special reports

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Internet-källor

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Nationella databaser | Otolith Atlas of Taiwan Fishes | Offentliga akvarier | PubMed | Reef Life Survey | Tree of Life | Wikipedia(Go, sök) | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00487 - 0.02471), b=3.04 (2.85 - 3.23), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.4   ±0.43 se; Based on food items.
Resiliens (Ref. 120179):  Låg, lägsta populationsfördubblingstid 4,5-14 år (tm=2-3; tmax=15).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (31 of 100) .