Salty_Dawg
Aquarium Advice Regular
2 sevurem
2 big plecos
Maybe a green terror ( what's it sientific name my lfs wants to know )
And what more
Remember plecos can be extremely messy, 2 +the Oscar will create a large bioload.
Can't help you with the green terrors never kept one.
Silver dollars are a great tank mate for an Oscar/most decent sized cichlids(fast enough to swim away, large enough not to be swallowed) just remember they are jumpers!