I think this is the largest tank and holds the largest fish - the two stingrays whose tails can just be seen beside the front glass. I think these fishes are all adults from the Aquarium at Regent's Park and I expect that more fishes will be added as soon as possible. But I think the photo indicates that the water is not very clear yet: this is probably a harmless bacterial bloom, which often happens in newly set up tanks. I am sure that the zoo staff will be patient as the tank and the filters mature.
