Large dark olive trio fly tied by Barry Ord Clarke

Large dark olive trio Baetis rhodani – LDO

Large dark olive nymph

The large dark olive (Baetis rhodani) are probably the most widespread of all the European may flies, being Multivoltine, where water temperature allows, having two or more generation cycles per year, makes it even more important to the trout and fly fishermen alike! When designing fishing flies its not the very small details that count, although aesthetically pleasing to the fly tyer, and an important part of our craft! its a combination of several that will be the deciding factor for the fish. Size, colour, silhouette, footprint, behavior.

One of the earliest hatches here in Norway that I tend to fish is on the Trysil river with my good friend Espen Eilertsen owner and head guide of Call of the wild Drift boat fishing.
Although the weather was warm, a light shower that lasted an hour or so had just tapered off and there where Rodanis mayflies hatching everywhere, and when I say everywhere, I mean everywhere, but this being the first day of the hatch, the famous Trysil grayling were not as eager as the gulls to take advantage of the a la carte menu. I couldn’t believe that fish where not rising! The whole river surface was covered with duns, popping up and floating like regatta of small sail boats down river. Espen reassured me that this was normal and it always takes a little time for them to start feeding on the surface when the hatch first begins. The first few hours of the hatch, they generally concentrate where the food is most plentiful and thats below the surface. Taking nymphs and emergers as they rise to the surface.

For the next three hours we had only been in contact with a few fish and drifted just about every type of river condition from shallow rapids to fast flowing channels to flat calm slow drifts, and the Clacka drift boat in combination with Espen´s expert handling of the craft is impressive, performing perfectly as a sturdy fishing and casting platform at all times. We drifted through breath taking Alaskan type landscape, with steep rising pine and spruce covered mountains on each side of us, that you only get full wide screen effect of from mid-river, the speed of the boat slowing down as we could see in the distance where the river opens out and widens into a large basin.

Fishing a LDO nymph on the point and an emerger on a dropper that was easy to see on the dark water, drifted perfectly 7-8 meters from the boat, quickly approaching two rolling grayling in the next pool, that we had had our eyes on for the last 80 meters or so, drift. When without warning another, previously unseen fish rose from the depths of a dark pool and enthusiastically disappeared with my dropper. Espen lowered the oars and began pulling, to slow our decent and dropped the anchor. I lifted my rod and it immediately assumed the golden arch position with the grayling diving deep into the pool. After a short battle my first grayling of the season was released.

After a little fly and leader attention, Espen was holding the boat steady and suddenly says ” nine o clock, 15 meters ” I lift my rod and make a couple of false casts to shake of the dry fly floatant and lie my line down in the nine o clock position, “perfect” says Espen. The fly drifts perfectly along with several naturals, one of which is 60 cm or so ahead of mine, when it slowly enters the steady risers feeding window and “sup” its gone. Mine is next in line ! and like a text book account of how it should be, the fish obliges and leaves only small rings in the surface where my fly once was. If there was only a slight breeze these rises would be impossible to see. I automatically lift the rod and my line tightens, I can feel immediately that this fish is of another class from the ones I have had contact with so far. The fish dives and enters the strong under current using his majestic dorsal fin to his advantage and holding his position deep on the bottom. After 2 or 3 minutes he succumbed to the overwhelming power of space age carbon. What a beautiful fish, 38 cm of grayling, a new personal record on dry fly.

Normally the style of rise observed, will give a good indication to what stage of the insects life is being taken! With emergers the fish almost seem to be anesthetized slowly and repeatedly sucking in the water under the target, or the surface film is pushed up in a small mound without the fish actually breaking the surface. When rising to dun’s the rise is more enthusiastic, slashy and splashy. When rises are sparse or the fish are playing hard to get, just taking one or another emerger. You can search pocket water or fish dead drift with an appropriate single nymph or even combined with a emerger dropper. This ribbed abdomen technique is an old one that I have revitalized with the help of Bug Bond and spirit based felt pens. Moose mane hair is not from the beard that hangs on the neck but the longest hair that can be found on the back of the upper neck. Being a elk hunter I have access to a huge amount of select material each autumn, but the skins being the size they are I only take smaller patches of the best and most useful hair for curing. These hairs are remarkably strong, practically unbreakable when pulled between the fingers!

Large dark olive nymph recipe

Hook: Mustad R72 nymph
Tying thread: Dyneema
Tail: Fine deer hair
Body: Moose mane hair two dark and one light coated with Bug Bond
Wing case: Virtual nymph Felxibody
Thorax: Virtual nymph medium olive and black seal fur mix
Legs: Bronze mallard

How to tie Large dark olive nymph

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1
Secure your 2 X long nymph hook in the vice, so the hook shaft is horizontal.

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2
Attach your tying thread a few mm behind the hook eye and run all the way back to the rear of the shank.

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3
Select 3 fine and quite stiff deer hairs. The ones I have used here are from a roe deer mask. Tie them in as shown in the form of a trident.

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4
Take a tiny drop of Bug Bond and place on the three deer hair bases. Give this a zap with the UV torch. This will keep the three tails in place.

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5
Take a patch of moose mane. The natural mane is a mixture of what they call salt and pepper coloured hair. If you can get hold of un treated (washed or tanned) moose mane this has much more durable hair.

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6
Select two long dark hairs and one long light.

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7
Tie in the hairs. Tie in the light one first at the base of the hook shank and then the dark hair.

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8
Now take both hairs at once, make sure that they are parallel with each other and not twisted. Wind them on tight and even over the whole body of the nymph. Make sure they dont cross each other while winding on!

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9
Tie off at the thorax.

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10
Once you have cut away the excess give the whole body a fine coat of Bug Bond UV resin.

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11
When you have cured the first coat colour the body with a olive waterproof felt pen.

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12
Give the whole body a final coat of Bug Bond. This time you can apply a little more to give the nymph body a taper .

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13
Now wind your tying thread a little back over the rear body as shown and tie in a small strip of olive flexibody for the wing case. Make sure this is central to the body and on top of the hook shank.

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14
If you wish to add a little weight to the fly, now is the time before you dub the thorax. Spin a little olive seals fir dubbing and wind on over the base of the flexibody.

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15
Select a small bronze mallard hackle and cut out the central stem and remove the down, as illustrated.

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16
Place the bronzed mallard over the body so the fibers cover each side of the nymph body. Make a couple of loose turns of tying thread to hold these in place. Then you can pull on the hackle stem to adjust the length of the legs before tying down.

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17
Once the legs are tied in remove the excess and make a couple more turns of tying thread tight into the dubbing so the legs flare out at an angle.

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18
Take a little more olive seal fur and mix with a little black seals fur then dub the remaining thorax. Make sure that you leave enough room for the wing case and head.

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19
Fold over the flexibody strip for the wing case and secure with 2 or 3 tight turns of tying thread tight back towards the thorax. Make sure the wing case is nice and tight over the thorax.

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20
Carefully trim off the remaining flexibody and tie down. Whip finish and varnish.

Large dark olive emerger

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Large dark olive emerger recipe

Hook: Mustad C49S
Tying thread: Dyneema
Tail: Fine deer hair
Body: Moose mane hair one dark one light coated with Bug Bond
Wing: Bronze mallard, CdC and deer hair
Legs: Coq de Leon fibers

How to tie Large dark olive emerger

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1
Secure your emerger hook in the vice, so the hook shaft is horizontal.

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2
Attach your tying thread a few mm behind the hook eye and run all the way back to the rear of the shank.
Select 3 fine and quite stiff deer hairs. The ones I have used here are from a roe deer mask. Tie them in as shown in the form of a trident.

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3
Take a patch of moose mane. The natural mane is a mixture of what they call salt and pepper coloured hair. If you can get hold of un treated (washed or tanned) moose mane this has much more durable hair.

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4
Select two long hairs one dark and one light.
Tie in the hairs. Tie in the dark one first at the base of the hook shank and then the light one.

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5
Now take both hairs at once, make sure that they are parallel with each other and not twisted. Wind them on tight and even over the whole body of the fly. Make sure they dont cross each other while winding on! Tie off at the thorax.

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6
Trim off the excess and give the whole body a coat with Bug Bond.

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7
Colour the body with a waterproof felt pen.

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8
Tie in a small bunch of bronze mallard for the wing.

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9
Spin a small amount of Olive CdC in a dubbing loop.

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10
Wind on the dubbing loop to form the thorax making sure that most of the dubbing sits on top of the hook shank.

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11
Now a small bunch of fine deer hair for the over wing. Try and use deer hair with nice markings.

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12
Now take a few fibers of olive or yellow Coq de Leon and tie these in for the legs on the underside of the thorax.

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13
Spin another small amount of CdC and wind on to form the head.

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14
Whip finish and varnish.

Large dark olive dry fly

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Large dark olive dry fly recipe

Hook: Mustad R30
Tying thread: Dyneema
Tail: Coq de Leon
Body: Moose mane hair one dark one light coated with bug Bond
Wing: Grey duck wing quill sections
Hackle: Golden Badger

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2 thoughts on “Large dark olive trio Baetis rhodani – LDO

  1. Can’t thank you enough for your contribution to fly fishing and flytying !
    -Articles- explanation of tying and and inspiration . as an Englishman living in Ireland i am surrounded by the ‘Brotherhood of the Angle ‘ and there is no where else i rather be -i was told that once you cast or first line you will never be the same again ! And it’s true !
    The learning process and the peace it gives , is as a strong as it ever was in me and you are one of the teachers !
    Thanks again Barry
    Chris

    1. Hi Chris, thank you so much for your kind words, it’s a lot of work and takes considerable time to put together but it’s worth it.
      Cheers
      Barry

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