Thanks for the replies, Yeh I've checked out that page a lot, along with pretty much every other forum thread that Stella has contributed to. There's a lot of awesome info out there but it's just stuff that's region specific that is hard to come buy. I have been toying with the idea of collecting the less established fish in the region from other areas where their stocks are much healthier, not strictly a regional biotype though...
In regard to the no releasing after catching, do you mean that if I net a fish to photo and ID it, that I then cannot put it back in the waterway even if I have not handled it? I will be using a catch and release specific net. I have seen threads on spotlighting here where photos show the fish in someone's hand, I assume it is then being released after that. I will make a point of researching the legalities more as I am definitely going to be doing everything by the book.
And cheers binu, definitely excited to see what I can find around Okataina