Reproduction of Chondrostoma nasus
Document source: http://www.fishbase.se/Reproduction/FishReproSummary.php?ID=4878&GenusName=Chondrostoma&SpeciesName=nasus&stockcode=5108
 
Main Ref. Sokolov, L.I. and L.S. Berdicheskii, 1989
Mode dioecism
Fertilization external
Mating type promiscuity
Spawning frequency one clear seasonal peak per year
Spawning aggregation Yes.   Ref.  SCRFA, Science and Conservation of Fish Aggregations, 2018
Batch spawner Yes.   Ref.  Kottelat, M. and J. Freyhof, 2007
Reproductive guild nonguarders
open water/substratum egg scatterers
Parental Care none
Description of life cycle and mating behavior 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).
Search for more references on reproduction Scirus
(e.g. 9948)
( e.g. cephalopods )
Entered by Torres, Armi G. on 03.04.98
Modified by Luna, Susan M. on 06.01.16
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