This study aimed to test the efficacy of 17 α‐methyl testosterone (17 α‐MT) alone and in
combination with letrozole, an aromatase inhibitor, for the induction of sex reversal in
protogynous greasy grouper, E pinephelus tauvina. Further, the long‐lasting effects of these
treatments and spawning performance of sex‐reversed males were also investigated.
Greasy grouper with oocytes in the perinucleolus stage were implanted with 5 mg 17 α‐MT
kg− 1 body weight (T1), 5 mg 17 α‐MT and 0.2 mg letrozole kg− 1 body weight (T2) and 5 …

This study aimed to test the efficacy of 17 α-methyl testosterone (17 α-MT) alone and in
combination with letrozole, an aromatase inhibitor, for the induction of sex reversal in
protogynous greasy grouper, Epinephelus tauvina. Further, the long-lasting effects of these
treatments and spawning performance of sex-reversed males were also investigated.
Greasy grouper with oocytes in the perinucleolus stage were implanted with 5 mg 17 α-MT
kg-1 body weight (T1), 5 mg 17 α-MT and 0.2 mg letrozole kg-1 body weight (T2) and 5 mg …