Okay, maybe I'm being negative
but imagine the ripple effect if that thing sprung a leak.
Flooded power strips and keyboards, exploding monitors, destroyed phones, soaked paper, ruined carpet, and probably a few electrocutions somewhere in there.
Must wreak havoc on their insurance premium. Imagine moving one of those fish into a regular tank -- would it swim in squares instead of circles? Are employees allowed to casually sit on the desktops? Are there anything but algae-eaters over on the "window" side of the tank? Did the accounting department demand a dog-run after this?
Yikes.