Oogenesis and ovulation in normal conditions or induced by homologous hypophysis in Hoplias m. malabaricus (Pisces, Erythrynidae).

: The macroscopical, histological and histochemical study of the ovary of Hoplias m. malabaricus during its annual cycle makes it possible to classify oocytes in nine stages, which characteristics, inherent to each stage, have given evidence of certain aspects still unknown for this species. The hormonal induction by homologous hypophysis makes it possible to obtain the final oocyte maturation and the ovulation.