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Reproduction of Pygocentrus nattereri

Main Ref:

Pauly, D., 1994

Mode:

dioecism

Fertilization:

external

Spawning frequency:

One clear seasonal peak per year

Batch spawner:

Ref. Pauly, D., 1994

Reproductive guild:

guarders
nesters

Description of life cycle and mating behavior:

Males and females appear externally alike (Refs. 2279 & 9245). In 'Serrasalmus sp. aff. nattereri', reported to occur in the Orinoco basin (Venezuela, Guyana), the males have more 'bull-like' heads, but are more slender than females (Ref. 1672). Eggs are laid on tree roots trailing in the water and are guarded; the reproductive success may vary strongly from year to year depending on how the savanna was flooded (Ref. 9078). The eggs are large, adhere to plants and are not attacked by the parents. They hatch in 9 to10 days (Ref. 7020).

Search for more references on reproduction:

Scirus

Entered: Binohlan, Crispina B. - 19.05.95
Modified: Casal, Christine Marie V. - 03.08.06

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