I have .2 fish/g. IMO it looks understocked and I am considering adding several more fish. My tank is SPS dominated and when I slack on feedings it lets me know. I have been watching a friends LPS while he gets his tank back in shape and trying to "dirty my water" a little more for their liking as they were in bad shape coming into my system and it has increased the color in my SPS frags (this system is ~4-5 months old) and growth has also increased..... so I figure if I toss a few more fish in for when the LPS come out and continue to feed more I will be happy and the tank will look fuller w/ more action and better colors.
IF you count the 20 or so clownfish babies still alive I am kinda off the chart right now LOL
Here is my seemingly empty tank despite having 10 or 11 fish (I forget lol):
According to tank calculators it is what would be considered a 70g, but it held 52g (which is what I used for this) of actual water before spilling into the overflow & sump.