Reproduction of Oreochromis alcalicus
Document source: http://fishbase.de/Reproduction/FishReproSummary.php?ID=2034&GenusName=Oreochromis&SpeciesName=alcalicus&fc=349&StockCode=2231
 
Main Ref. Trewavas, E., 1983
Mode dioecism
Fertilization external
Mating type
Spawning frequency throughout the year, but peaking once
Spawning aggregation Ref.  
Batch spawner Ref.  Coe, M.J., 1966
Reproductive guild bearers
External brooders
Parental Care maternal
Description of life cycle and mating behavior Early in the morning before taking possession of their pits, the males feed on slimy algal growths-noisily; sexual activity is greater after noon than before; young male may build a small pit around that of a larger male and mate there with a small female (Ref. 2). Males prepare and guard nests, while females migrate from one nest to another; males guard the nest against juveniles of their own species and other species which feed on the fertilized eggs which fall from the mouth of the female mouth brooder (Ref. 11288). Also Ref. 118638.
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