> Now that doesn't mean that we should just disregard the problem, but I can't
> see PNG rainbowfish being introduced into the "pristine" areas that Peter is
> worried about. Yes I too would be worried about this if I thought it was a
> possibility. But to introduce fish into the habitat of trifasciata for
> example you would need to make a concerted effort to transport the fish to
> Cape York or even further afield to Arnhemland and dump them on purpose.
While I think of it. Even Cape York is not free from these issues. The
abundant population of Psudomugil gertrudae in the main center of Weipa
isn't native, it was translocated there by a local. Sure, this is a
native fish translocation, but the remoteness of the area made no
difference.
Tootles
Peter Unmack