The yellows comming into the country may not be golden kariza. Gk have black tails when then are small and only go golden at about 8ish cm. Its just what i think.
Most tropheus keepers do it for the enjoyment/behaviour/colour of them. Yes they do cost alot and yes we have to get large enough numbers but its part of keeping them. There are individuals that have got large groups and others that have got only a few and made it work.
I personally don't think that tropheus are hard to keep. If someone was to follow simple steps they are easy to keep. Biggest reason that you hear that they are hard to keep is becuase overseas keepers are dealing with wild caught and F1 fish. Those are alot harder than the F100 ( may not be but who keeps track) that we get in NZ.
The story goes that there were some red rainbows that came into the country but one individual got the whole lot. I wish that someone would man up and just get some quality trops into the country. I am sure that people would line up to buy fry. It won't be chap but would be great.
There maybe different types of fire foxes in NZ. Its just a hunch, but they could be Moliro/chipimbi.