Here’s another great pattern from the vise of Nick Thomas
It’s been a strange year on the Taff. In the beginning winter seem to want to hang on for ever with cold and snow staving off spring. Summer was just unreasonably hot, with the river dropping to a warm trickle. I stopped fishing for a few weeks; it just didn’t seem right. It got so bad that at one point late in the summer my club put a complete ban on any fishing. The start of autumn brought fierce squalls and flash flooding which completely changed the river in some places. Some of the best gravel runs were stripped back to the bedrock like a power-washed patio and boulders were shunted downstream like pebbles changing the course of some of the runs.
Despite all the hiatus the river continued to fish well, and I caught some good trout and grayling, plus a few bonus chub and barbel. One of the flies that earned its right to stay in my fly box though the changeable conditions was the OGN. In the early part of the year it fished well on a dropper above a heavy tungsten bead nymph, later transitioning to being suspended under a dry fly in a duo.
The OGN is not intended to imitate anything in particular; it’s simply designed to look very edible. The transparent body wrapped over shiny tinsel hints at segmentation and internal body structure, while the organza filaments catch the light and the current like the gills along the bodies of many natural nymphs.
Hook Hends BL554 size 8-12
Head Black glass embroidery bead
Thread Veevus 12/0 black
Rib Semperfli 0.1mm chartreuse wire
Abdomen Hends olive body glass
Gills Stripped cream organza ribbon
Underbody UTC medium opal mirage tinsel
Thorax Fasna olive squirrel dubbing
It looks complicated to tie. It’s not. Attaching the gills is just a matter of letting your wire wraps follow the spiral in the body. Once tied it’s as tough as old boots and will last far longer than a nymph tied with herl gills secured with thread.
The pattern lends itself well to variations. Body glass is available in a wide range of colours or can be tinted with a marker pen. Mixing with different wires and organza in darker colours allows a wide range of nymphs to be imitated should you wish. Me? I just use the olive and cream flavour. It works.
For a step by step guide to tying the OGN and a bit of summer fishing watch the video below.
Nick Thomas lives in South Wales. He started fly fishing on Scottish hill lochs many years ago and continues to design, tie and fish flies for trout, grayling, carp, bass and anything else that’s going.