120 gallon?

[illbethejudge]

You can't sex Oscar's like some other fish by fins or marking, you have to check the plumbing to make sure, they are near identical otherwise.

Here is my girl. You can see she has a bigger hole and a smaller one. Males have two simular sized holes here.
View attachment 1312461

Thanks. that is really helpful.

 

[JK47]

What else would you stock in a 120 gallon with 1 oscar that is about 6"?

A large piece(s) of wood and a pair of Severus would make for a killer tank

 

[illbethejudge]

A large piece(s) of wood and a pair of Severus would make for a killer tank

severums is a good option.

 

[illbethejudge]

What about the oscar and a synspilum vieja?