2 inch gt with oscar

No.

3 oscars is enough as it is. Besides a 2 inch GT would be lunch for oscars that big.
 
depends on the personalities of the fish. i have two little green terrors (1-2 inches) along with a 12 inch pacu, 8 inch red devil, 7 inch jack dempsey, 6" Aztec and some other fish in a 125 gallon. Everyone gets along just fine - i would watch them very carefully if you are to try it though
 
if anything take something out before you put something in.
 
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