gnostic
The Lost One
And how or where each pair of animals are kept in the ark is not the only problem.There would be no point in making the ark a specific size if space was not an issue. Your ad hoc rationalization does nothing to resolve this issue.
There are also the matters of storage of food and water kept.
Assuming that carnivore animals can't eat the other animals in the ark, they required to store enough food for all the animals for ONE WHOLE year. The ark, according to Genesis specifications, is way too small for keeping animals and the amount of food required to feed them for a whole year.
And there are the matters of what do animals eat once they leave the ark.
Wouldn't predator carnivore animals start hunting their preys?
Most of the animals would become extinct not long after they leave the ark, because carnivores would need meats to eat, before the ark animals can reproduce in sufficient numbers.