If the population is properly thriving in the wild, there is little harm in light collection. The way it goes, though, is not a pretty picture. Look at the galaxy rasbora! Discovered, demanded and almost extinct in two years. That's the picture of wild collecting. Poor supervision and over-collecting have made it difficult to keep a clear conscience, for me at least. I try to buy and collect species that are known to be abundant, or find captive-bred specimens.
