Where to see all sorts, from angels to zebras? (8)

I believe the answer is:

aquarium

But I can't explain it at all!

(Other definitions for aquarium that I've seen before include "Glass fish-tank" , "Fish tank or marine museum" , "For live fish and underwater animals" , "Building containing live fish for display" , "Tank for aquatic life" .)

I've seen this clue in The Guardian.

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