What are all the known variants of Oscars and their characteristics?

[FINWIN]

I'll be in the market for one by the summer probably, but some of the scientific classifications (orbiculus, crassipinis) I have no idea if this is just naming or sub-groups. I'm not talking about colors so much as regional body types and their appearance/pattern. Of course availability will be important.

I've heard of gold/and or spotted variants but have no idea which oscars are referenced. I'm assuming they all get to the same potential maximum size (despite the inaccurate data on Bumblebees).

 

[duanes]

There are really only 3 recognized species
A crassipinis from Bolivia, Peru, and Paraguay
A mikoljii from the Orinoco in Venezuela and Colombia
And A occelatus from greater Amazonia
They all get similar in size
A mikoliji may be the most sensitive to strict water parameter requirements (needing lower pH, black tannin stained water)
The species from Paraguay may be most cold, and water parameter diverse tolerant (southern Paraguay is considered almost temperate).