You can easily get that lot in 400 litres with the right filtration and good husbandry, in larger tanks a experienced fish keeper can push the stocking limits of a tank to 2 inches per gallon without any problems. Even adding up fish sizes at maximum size it is still below 200 inches of fish.
As i know Chali personally i know the dimensions of her tank, how much and what filtration she uses and how she cares for her tanks i can suggest a larger ammount of fish than i usually would.
As i know Chali personally i know the dimensions of her tank, how much and what filtration she uses and how she cares for her tanks i can suggest a larger ammount of fish than i usually would.