Unfortunately these factors only come to light when things are getting desperate, and I guess it is only just another manifestation of Murphy's law.
<<I just think we need to make a few notes and publish them on which
species are suffering from either of these two conditions. So future
bow keepers can learn from our mistakes and successes.>>
We have a few species that have disappeared - mostly PNG Rainbows but I'm not sure if they were lost due to "depression" of the genetic fitness of the stock. It was more like there were not enough concientious and capable breeders who were prepared to put
the effort into relatively unattractive species. I probably couldn't give an exhaustive list but Chilatherinas such as crassispinosa, bulolo, sentaniensis; Glossolepis multisquamatus is another fish I haven't seen for quite a while. Also Melanotaenia mon
ticola, perhaps oktediensis etc etc
I agree we need to try to keep track of stocks - i. e. who has what and how many and try to ensure that at least 4 or 5 populations are in existence to draw from as well as some idea how each of them is "performing"
Bruce Hansen ANGFA.