Starting a Cichlid tank soon, need advice!

Not many plecos will eat algae but i wouldn't put one in a tan that size with an oscar. If you really want an oscar then that will be all you can have in the tank unless you get a tank bigger than 75g.
I think oscars are great fish with loads of personality, mine used to jump out of the top of his tank to tank food from my hand.
 
The sev sounds like a good idea, but do they have personality like the oscars, thats what really drove me to want an oscar?
 
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