It's got the black ear, right? I cannot see it in the pics. That's all that matters for the ID at this point, I'd think. The base color varies.
Swimming against transparent and semitransparent surfaces appears typical for IDS. I noted the only time mine don't do it is in ponds, presumably because the walls are non-transparent. I presume this can be the same for launardi albeit they are from different genus.
It could be a mating / migrating instinct kicking in but your fish's too young for that, I think.
If he is only rubbing, it's not as bad as slamming, but still can get a sore on the snout if done extensively.
If you add more current, a powerhead, it may lessen or stop this behavior as he will get plenty of exercise otherwise.