Is there any where in the north island where u can go and catch your own Guppys from a lake or river  

I'm pretty sure you can catch them in a thermal stream in the Taupo region. 

There is also a thermal swamp near Tokanuu village south of lake taupo where you can catch mollies.

https://www.niwa.co.nz/freshwater-and-estuaries/nzffd/NIWA-fish-atlas/fish-species/other

Butchers Pool and the outlet stream has no more Guppies
Let me know if you find some, please.

 

Cheers,
JaSa

Bugger

Please be careful and make sure you are catching guppies and not gambusia, which look very similar but are a pest fish and illegal to catch.

Interesting this thread just popped up - I haven't had any fish for over a year, but have recently re-caught the buzz. I always wanted to check out the Reporoa guppy rumour, and today got the chance to jump in at two of the spots shown here. The records are from 1984 though... the streams I was in were nowhere near the 30oC recorded, and I only caught gambusia 

There is also a post in the forum that is a about 10 years old which mentions they were at Golden Springs...

May get a chance to check out a couple of the other spots in the next week or two, but would be interested to know other peoples experiences

 

the streams I was in were nowhere near the 30oC recorded, and I only caught gambusia 

I do wonder how many reported sightings of guppies in the wild actually are gambusia.   Used to be it was pretty common to see gambusia sold on Trademe with a description along the lines of "Guppies I caught in the stream behind my house."  Haven't seen any in a while, but I haven't looked.

Haha! I had that exact thought myself after I checked another spot today with gambusia and goldies  at least this one was the right temp!