No offense but you could not be more wrong. They don't remember things like being handled. They are simpler then that, they react rather then remember.If you handle them alot then certain ones can get accustom to being handled.
How can it be aggression? She would not have attacked if you had not stuck the chopsticks in the tank near her, so that’s a reaction thus defensiveness. Same with dropping something in the tank, she is reacting in defense.One is very docile, and has never snapped out at the chop sticks or my hand, while the other is aggressive (yes aggressive, not defensive (I read the article). She will chase things down, run after them in jolts of speed.
1. changed from the wild or savage state; domesticated: a tame bear (although reverting back to it's wild state is a distinct possibility).
2. without the savageness or fear of humans normal in wild animals; gentle, fearless, or without shyness, as if domesticated: That lion acts as tame as a house cat.
3. tractable, docile, or submissive.
With Ts, it's all about chemicals - stimulus and response.