So are you wanting to go captive bred to take it easy on wild caught populations and the reef?
If so one other thing to consider is using:
http://fishbase.org/search.php
to determine how resilient a given species is. If you scroll down on any given fish page you will see resilience comments and vulnerability rating.
Some fish reproduce like rats to fill a niche to capacity in no time and others go really slowly. Your Purple Firefish for instance has a low vulnerability rating of 10 out of 100. So it looks like they are not going to be fished out anytime soon.
