how do you tell the difference between female and male Oscars (fish)?

Answer 1

Oscars are virtually impossible to sex from outer appearances. That is why it is best to get several juvies if you want to breed them. The juvies will pair up and you can tell the females from the males at that time. The males usually grow bigger, but not always.

Answer 2

Here is a great site that explains it really well
http://www.oscarfishlover.com/index.php?option=com_content&task=view&id=32&Itemid=78

Hope that helps
Good luck


EB

Answer 3

Males are longer, more colorful, have longer fins.