It very much looks as if a person who wanted to get rid of
their gold fish emptied their aquarium, weed and all, into the pond in the
gully. As a result this very invasive water weed multiplied to cover the pond
within six months. It has been washed out the overflow into the stream and is
now spreading downstream to the Waikato River. Gold fish themselves are a pest
carp in the wild. We appreciate that the person who did this did it through
ignorance not knowing what the ramifications are. However it is a good
demonstration of the harm that can be done by transferring and releasing both
fauna (animals) and flora (plants) into the wild of species that can be
invasive.
It would only take one person to release a live rainbow
skink (Australian pest skink) that their cat bought in, into our skink
enclosure for it to be overrun by this invasive species. The rainbow is in
parts of the city and might even be as close as Thomas Road.
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