Reproduktion hos Chondrostoma nasus
Document source: http://fishbase.mnhn.fr/Reproduction/FishReproSummary.php?GenusName=Chondrostoma&ID=4878&SpeciesName=nasus&StockCode=5108&fc=756
 
Main Ref. Sokolov, L.I. and L.S. Berdicheskii, 1989
Mode dioecism
Befruktning external
Mating type promiscuity
Lekfrekvens one clear seasonal peak per year
Spawning aggregation Yes.   Ref.  SCRFA, Science and Conservation of Fish Aggregations, 2018
Leker upprepade gånger Yes.   Ref.  Kottelat, M. and J. Freyhof, 2007
Reproductive guild nonguarders
open water/substratum egg scatterers
Parental Care none
Beskrivning av livscykel ochfortplantningsbeteende Migrates some tens of km to spawning sites, which are often located in tribbutaries. Males form large aggregations, each male defending a small territory. Females spawn only once a year and in some populations, during a very short period of 3-5 days. Females lay sticky eggs into excavations made in gravel (Ref. 59043).
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