They are all fake. As with any tank, the best lighting we can achieve is going to reach about 2 feet deep. This tank looked to be about 10 feet deep or so. But the fish collection is wondeful. There are about 6 Unicorn Tangs, some approaching 18 to 24 inches. I counted at least 6 Achilles Tangs. Several African Hippo Tangs, and llots of others. Its worth the drive to exit 179 IMHO.