Estudo da reprodução e hábitos reprodutivos de Schizodon fasciatus, Rhytiodus microlepis e Rhytiodus argenleofuscus (Pisces, Anostomidae) do lago Janauacá ^(*)

Summary

Gonadal development was analized during the period of one year and the different stages of sexual maturation of three species of common Anostomid in the Amazon Basin was characterized. Also the epoch and local of spawning, the habits and the size in which the species begin the first sexual maturation were determined.