i just got my first oscar that looks the exact same has the white tips on the fins and the o on the tail. weird haha
yea but most that i see now dont have them, well here in tampa at least. they are mostly just jet black with a big orange stripe or white with stretch mark looking design. they look like this http://www.fishchannel.com/images/article-images/oscar-fish-breed-500.jpgThat "O" on the tail is symbolic of some or most sa cichlids. All oscars have them.
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Could also be a typical 'pouting' Oscar. They are known to act that way at times and he still is new to your tank so might still be trying to settle in.