I think there are several in Asia Trail, one even better is depicted in another photo, but doesn't allow for photography really due to the net. But Asia Trail is just outstanding overall, not just for Fishing Cats.
At least two; there was another one next to this one which looked the same. On top of that there may have been a third one, I photographed a specimen sleeping through the netted roof. It may or may not be one of those two, in Asia Trail it is sometimes hard to realise where exhibits start or end as I recall it.