I just got thinking... the clownfish craze is bad enough, but has the sale of anemones also gone up? As far as marine fish go, clownfish are relatively hardy and tend to do well in captivity with proper care. However, I've always read/been told that captive-kept anemones and the symbiotic relationship between clowns and anemones is one of the biggest failures in marine aquaria. As far as I know, anemones are wild-harvested.
In the wild they will live for a century (!!!) Actually, they could in theory live much longer, as their cells have no age-programmed apoptosis like us humans. A healthy anemone in captivity seems to be the a rarity with fatalities very common.
Aquarium clownfish DO NOT need an anemone; interestingly enough they will host with a rock, a coral (if u're into the reef end of things), or even an in-tank pump/powerhead.
Anthony