I'll preface this by saying I know nothing about aquariums, but to me the tank seems small for the amount of fish that are inside. Is this setup acceptable? If there's improvements to be made please let me know and I'll email management about it. Also just out of curiosity what kind of fish are in it?

Edit: The overwhelming consensus is this tank is beautifully maintained, so obviously, I have nothing to be concerned about and will not be contacting management. I want to thank the members of the Aquariums sub for treating me, someone who knows nothing of the hobby, with kindness and answering my questions. Not every sub would have given me the same treatment.