They look like Corydoras paleatus.
Those coloured bits look like flake food...you should remove all of that. Cories will not usually eat that, and in any event, they need sinking foods like shrimp pellets, and wafers like the Omega One brand Veggie Rounds.
Bare bottom tanks are also good with cories. A shallow layer of play sand would help them.
not sure how they are stressed lol. they are perfectly fine and are eating, growing and are not timid at all haha. anyway all I have is what is called long fin green cory, sterbai, juuli, and I also had a rogue napoensis when the eggs were laid. not sure where it came from to be honest, but just one anyway.Agree. They most certainly are not C. sterbai, nor C. julii (which would more likely be C. trilineatus anyway, but not those either). They don't look like C. aeneus (bronze/green) but the photos are not the best as the poor cories are clearly stressed out.
not sure how they are stressed lol. they are perfectly fine and are eating, growing and are not timid at all haha. anyway all I have is what is called long fin green cory, sterbai, juuli, and I also had a rogue napoensis when the eggs were laid. not sure where it came from to be honest, but just one anyway.