How to sex A. Bitaeniata

["Lee, Marshel" <Marshel.Lee@generalichina.com>]

Dear all,
 
I was importing a few A. Bitaeniata from Peru last month. But I could
not easily identify the sex of this species.
 
Anybody could tell me some tips on how to sex them. Thanks in advance.
 
Best regards,
Marshel

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