just a few thoughts
nz a smaller country
smaller population
smaller number of serious fish breeders
smaller number of fish brought in
smaller gene pool to work with, some species only come in in one shipment ?
more chance of inbreeding ?
more chance of sports or mutations occuring ?
mutations of nz kakariki are being bred overseas for a few years now whereas in nz have only occured a few times, pieds and yellows
your thoughts ?