$16 dollars wasn't too bad of a price to keep the girlfriend happy for an hour.
It's simple: you walk throughout jungle-like corridors and stop at various fish tanks. You look at them, you listen to the description on the provided audio thingnies, and you move on. Not a huge quantity of fishes (didn't seem as many as they advertised), but the setting was very pretty.
Btw: I loved the audio-phone-like-thingnies that provided lengthy descriptions in front of every fish tank (see picture). I am generally not one as is easily amazed by just looking at fishes, but the descriptions and facts they provided really added to it. Plus, I didn't have to read which was a great plus (hey, I was on vacation).
The place is at the far back (far far back) of the Mandalay, past the wedding chapel.
Tips:
- just skip the creepy guy at the entrance who asks you to take pictures of you and your significant other holding hands and hugging. Seriously dude.
- water/drinks/etc aren't allowed in.