The design is not suitable for Tetris; unfortunately, it is already set in stone.
The house was basically cobbled together around an aquarium, without knowing that every square meter costs a lot of money.
If the aquarium is the centerpiece of the apartment, then you don't look at the aquarium either while eating or from the mini-sofa. You simply walk past it.
I suggest planning the aquarium somehow as a room divider between the TV room and the dining room. So that both long sides can be seen clearly. Especially by visitors from the dining table.