Reproduction of Hypomesus pretiosus
Document source:
Main Ref. Morrow, J.E., 1980
Mode dioecism
Fertilization external
Mating type
Spawning frequency no obvious seasonal peak
Spawning aggregation Ref.  
Batch spawner Yes.   Ref.  Saruwatari, T., J.A. L√≥pez and T.W. Pietsch, 1997
Reproductive guild nonguarders
open water/substratum egg scatterers
Parental Care none
Description of life cycle and mating behavior Schools approach the beach to spawn, usually with the females appearing a few days before the males. At spawning, large numbers of males mill about near the edge of the surf. When a female is seen, numbers of males pursue her and try to get into spawning position. If she swims to deeper water, the males desert her. 1 to 5 males swim parallel to and slightly behind a ripe female. The males press against the female and as they reach water 2.5 to 5 cm deep, the fish bend and vibrate, releasing eggs and sperm, then retreat to deeper water. The spawning act may be repeated on several successive waves. Wave action buries the eggs, usually to a depth of 2.5 to10 cm but sometimes to as deep as 30 cm (Ref. 27547).
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