Aquarium Sciences and Conservation

, Volume 1, Issue 2, pp 113–118

Application of sex reversal technology in ornamental fish culture

  • Francesc Piferrer
  • Lian Chuan Lim

DOI: 10.1023/A:1018391702814

Cite this article as:
Piferrer, F. & Lim, L.C. Aquarium Sciences and Conservation (1997) 1: 113. doi:10.1023/A:1018391702814


Many species of ornamental fish, includingboth egg-layers and livebearers, exhibit a marked sexualdimorphism due to the more pigmented bodies and larger finsusually observed in males. This results in male fish commandingup to four times the price of females. Because of this pricediscrepancy, the culture of monosex (all-male) stocks ofornamental fish could be of a significant economic advantage.This paper outlines the current sex reversal technology alreadydeveloped for several fish species important for aquaculture andexamines its potential applicability to ornamental fish culture.The methods to obtain all-male stocks include direct androgentreatment and the production of YY males. The direct approach iseasy to implement and straightforward. However, in somelivebearers such as the guppy, treatment of newly born fry iscomplicated because they already have sexually differentiatinggonads and the masculinization may be temporary. In this regard,the paper stresses the importance of correctly timing treatmentin relation to gonadal development to achieve permanentmasculinization

sex control androgens masculinization ornamentalfish guppy Poecilia 

Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • Francesc Piferrer
    • 1
  • Lian Chuan Lim
    • 2
  1. 1.Spanish Council for Scientific Research (CSIC)Institute of AquacultureCastellonSpain
  2. 2.Primary Production Department, Ornamental Fish SectionSembawang Field Experimental StationSingapore

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