Dr. Noga does not have access to large quantities of marine fish to study and follow over time, and I have. There simply is no "latent mortality". This isn't a point to disagree upon, you just need to understand the topic:
From my book:
Cyanide collection
The collection of marine aquarium fishes with sodium cyanide has been well documented and is the primary cause of death for freshly collected marine fish from certain regions. Exporters handling these fish tend to either categorically deny that this practice takes place or just sidestep the issue and say that it doesn’t really harm the fish.
In one unpublished 1983 study, 61% of a group of suspected cyanide-collected fish died within 30 days of their importation. None of the control fish housed in same the aquarium system died, and only 9.1% of the fish originating from more sustainable areas, including Hawaii and Sri Lanka, died during the same time. The sample size was 448 fish, so it was large enough to reveal a general trend.
A similar test undertaken in 2006 showed that 55% of a group of Philippine and Indonesian fish died within 30 days of importation versus 3.1% of the control fish housed in the same system. In a third study, which followed a group of marine fish for 40 days after their arrival, 55.9% of the fish from suspect cyanide collection areas died while only 6.2% of the fish acquired from more sustainable regions and quarantined in the same system (at the same time) died.
There are currently movements afoot that are helping to limit cyanide collection in the Philippines, but the problem seems to continue mostly unabated in Indonesia. There are rumors that cyanide collection is increasing in Vietnam, the Red Sea and the Cook Islands. It is not unknown for dealers to “re-label” their fish as having originated from an area that does not use cyanide. This can happen at any stage of the supply chain, so even your dealer may have been misled.
Related articles I've published:
Certainly, invertebrates experience mortality in captivity, but less is known about their natural longevity.
reefs.com
This article is a bit of a mashup – combining portions of a previous public aquarium article on animal sustainability, with some longevity data and fish pricing through the supply chain.
www.reef2reef.com
Jay