tiger oscars

[steve]

I have tiger oscars (reD) How do I tell the difference between male & female

 

[fishydude22]

it's impossible to tell externally, ask Managuense he knows

Oh, and welcome to the tank!

 

[Managuense]

oscars are completely isomorphic, meaning the males and females are impossible to determine visually (until they breed anyway).

the only way to sex them is by probing them, which is not a recommended procedure for the average hobbyist......you could also wait till you get a pair, which would also work.

http://www.oscarfish.com/cms_view_article.php?aid=4