Well guys, as much as I wanted to convince myself that my two ottos were fine in a 7g tank, you just can't imagine the level of activity now they are exhibiting in a 5 foot tank. Its like a paradise to them and I have to promise to myself never to put fish in a small tank ever again, not without a reason and not for a long time. It's not about immediate health, the behavioural change is amazing. I call ottos butterflies because in a big planted tank they don't stop, they go from leaf to leaf and I never ever see them hanging on for ages on one spot. They never hide because they are always moving doing something. So I am happy now about their well being and they seem quite happy to me.
As for the little kid, he/she is some active little thing. He does flaps and dances around the glass and is hyper active, definitely feels at home... But he's still quite small and grows very slowly. It's been like two and a half months since his birth. He's got nice round shiny belly and a fat tail, dark line across and dark top colour. He eats something from the glass all the time, but lads, are they slow growing....no wonder its not feasible to breed and raise ottos.