jeoy,
exactly that one came from rio tocantins. those oscars have been collected in middle tocantins to upper tocantins for years.
the japanese exporter in Goias state have exported for 5 years.
The Sao Paulo Oscar Jeff has sold a few times in past has a very similar patten. I have discussed a few times wit jeff, but his answer was orbic only. Japanese judged it could be crassipinnis or very similar sub species.
here are a few original crassipinis pic from west pantanal region near Bolivia
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here are some juve pics of Rio Tocantins just same with jeoy's pet
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when they are smaller size, those lines are consecutive spots.
regarding rubroocellatus, it seems that Jardine described in 1843 as cychla rubro-ocellata from rio negro fish. That old illustration is almost the one from rio Branco (Branch in the Rio Negro)
German book is reffering this species.
please don't think this post is any offensive reply..
Seiichi