In New Zealand we use two flies - a brown one and a black one!
 
Rene Vaz of Manic Tackle says: When it comes to tackling wary trout in the heavily fished Nelson area, you need patterns that are subtle but effective.  This simple little black parachute is easy to spot in the surface film as it runs through riffles and has a clean profile of a classic mayfly dun.  In overcast conditions or early morning when the water's surface goes silver you won't lose sight of this puppy!

Zane Mirfin says: These are the flies we use for our own commercial guiding.  They are original ZM designs tied on top quality NZ-style hooks to catch the big fish.  Black flies are particularly successful in Eastern waters

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