Masculinization of flowerhorn by immersion in androgens

This research objective was to investigate the effects of two synthetic androgens, 17 α-methyltestosterone (MT) and mesterolone, on sex reversal in flowerhorn fish by hormonal immersion with the aim of introducing a new method for producing all-male flowerhorn progeny. In this study, 6 days post-hatched fry (swim-up stage) were immersed with either MT or mesterolone at different concentrations (125, 250 or 500 μgL -1 ). One hundred and forty...