Looking for advice for stock compatability, changing of my stock.

[Gourami Swami]

You kept more than one severum?

I had my Oscar in there with 2 severums which got to be the size of small dinner plates, a smaller female jack Dempsey, a small species geophagus, and a pleco. I think I had a convict for a while too but he was too mean. Stock worked out fine, nobody fought and I kept the tank clean. Wouldn't necessarily recommend that to somebody asking for "good advice" though... but it worked
Edit: Found a pic

 

[shamrock]

I agree. I had a 13" Oscar in a 75g and felt a 4' tank was too small. IMO a 125g+ would have been much better.

Too each his own, bigger is better but with that said an Oscar is fine in a 75 gallon tank.

 

[shamrock]

I agree. I had a 13" Oscar in a 75g and felt a 4' tank was too small. IMO a 125g+ would have been much better.

Too each his own, bigger is better but with that said an Oscar is fine in a 75 gallon tank.

 

[Stanzzzz7]

Beyond just eating the other small fish, the oscar will outgrow a 90.
I wouldn't consider any fish that grow more than 9", for a 90 gal.
The oscar can get 12" to 15".

Agreed.

 

[Stanzzzz7]

I agree. I had a 13" Oscar in a 75g and felt a 4' tank was too small. IMO a 125g+ would have been much better.

+1 a 75 is far too small and restrictive for an intelligent species like an Oscar.