tankmates help

[OscarMan0315]

the 9 inch tends to be aggressive sometimes. but the 8 inch is just swim around making friends. my friend just gave me two pairs of cichlid n i gt no idea what they are. they are just around 3 inch. heres a picture of them. maybe u guys know it id. im guessing its a gt..
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not sure what they are, they arent green terrors though. And thats a good sized tank, 120 gallons if the dimensions are right. Just dont go over board with the stock, oscars are dirty fish, but very cool fish at that.