I am no expert on corals and other reef invertebrates, but the display tanks at London Zoo have well established and diverse displays of hard and soft corals. The ZSL's latest stocklist (January 2019) includes 44 different types of anemones and corals, although some of them may not be on display.
The fish species in this aquarium include longnose butterflyfish (Forcipiger flavissimus), Arabian angelfish (Pomacanthus asfur), royal empress angelfish (Pygoplites diacanthus), goldtail damselfish (Chrysiptera parasema), blue-spotted spinefoot (Siganus corallinus), blue tang (Paracanthurus hepatus) &
Red Sea sailfin tang (Zebrasoma desjardinii).
I will post photos of some of these fish specimens eventually.
@gentle lemur Gee, thanks! It legitimately is a shame that a piece of (literally) living history is being shafted due to backlogged maintenance/backwards priorities.
@Wyman I think that the problems with the Aquarium are more complex than you suggest. We cannot blame the designers or the builders of the Mappin Terraces and the Aquarium beneath for failing to anticipate the standards that we expect a century later. Neither can we blame them for creating something so iconic that it is judged too important to demolish, even if it is effectively unfit to use. No amount of maintenance could ever have made the Mappins fit for their original purpose today or suitable for any other purpose, except to the most limited extent. Moreover working under those protected structures to update the Aquarium to 21st century standards would be such an engineering problem that it could never be financially viable. ZSL proposed a solution in the Biota! project to be built in Docklands, but that did not survive the financial crash.
S**t happens!