It's in the Australian roadhouse, which is a type of Aussie bar. This fishing cat exhibit probably held some kind of reptile, as directly to the right of it there is a large nocturnal house with banded palm civets (the only ones in North America), fishing cats, kiwis, tree kangaroos, tiger quolls and several other species.
Actually the fishing cats do have access outdoors! We have three non-display outdoor exhibits and the fishing cats, quolls, tree kangaroos, and kiwis use them.