The Real Rag Worm
A wiggling tandem
A bit about worms
One of the most important in Scandinavia is Nereis diversicolor, which can be found in many colors as the name indicates.
The nereids are long worms living most of their adult life in the bottom of the sea, unavailable as a food source for most fish. Each year in the early spring - sometimes as early as February, but mostly in March and April - they emerge and form big schools, where they secure the next generation. Many anglers will say that the first full moon in April will lure out the worms.
They are not only important to the trout as well to us when making rag "wormlings".
Current and storms may move the sand flats, where the worms are hidden and they will no longer be burried safely. The fish feast on them from beneath and the sea gulls from above - the gulls being a good indicator of the presence of freely swimming worms.
The nereids are a big mouthful and worth swimming for, so they are often found in the stomach of nice fish. The fish may even become selective or "blind" to other food items when the rag worms are present in endless numbers. The only thing that works then is a rag worm imitation.
The Real Boerstenworm
Several Scandinavian fly tiers have created rag worm imitations, but one of my favorites is The Real Rag Worm tied by Claus Eriksen in 1996.
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![]() When dreams come through Claus Eriksen |
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After a tying course Claus went fishing with Davy Wotton. Claus tells the story:
"When we arrived, plenty of rag worms were wiggling and swimming around. Mr. Wotton smiled and asked if I had any flies looking like such a creature. So I opened my fly box and showed Davy the imitation - "Yeah, that looks like a real boerstenworm", he said. That is how it was named. And suitingly so since "boersteorm" translates directly into "brush worm" or "rag worm" in English.
It is the result after many ideas and variants. The current version is effective and not too complicated to tie. The bead and the soft connection between the two hooks make the fly go up and down in an irresistible, life-like manner.
Coloring with a waterproof pen makes the fly look camouflaged and reflecting the light in different colors and tones. This to some extend compensates for the synthetic and unnatural appearance of the cactus chenille.
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![]() Too scared for hand-picking Henning Eskol |
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When I asked Claus to send a picture of a trout taken on the worm, he send me the one to the right. That fish is huge by any standard, and a worthy proof of the worm's effectiveness:
"The fish took the fly one early morning in March. I was fishing a small reef of mussels. It suddenly exploded very close to where I was standing..."
Fishing at night
A smaller, black version is very effective when it is dark. The folded Magic Head makes it streak just below the surface. Claus has had so much success with this setup, that it has now replaced the old and famous Black Cigar.
The night version does not have a bead on the front hook.
Tying tips
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![]() Weed guard Kasper Mühlbach |
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The Angel Hair in the tail is not a must, but it gives a nice reflection in the soft marabou. Do not add too much, but only a few fibers.
Materials
| Hooks | Owner Chinu 50355. Front hook #1/0, Rear hook #2 |
| Thread | Light grey or rusty |
| Tail | Brown marabou and a few strands of olive Angel Hair. Speckled marabou will do great. |
| Connection | Fireline, 40 lbs. |
| Body | Cactus Chenille, brown or olive |
| Front hackle | Saddle hackle, brown, grey, olive or black |
| Head | Bead, brass or red. |
| Glue | AquaSeal or other soft-when-dry glue |
Tying instructions
- Prepare the rear hook first covering the shank with thread
- Tie in the marabou tail. Do not make it too voluminous.
- Add a small bunch of Angel Hair.
- Tie in the Fireline. Cover it thoroughly with thread so that it is secure.
- Tie in the chenille.
- Add a bead to the front hook.
- Place the front hook in the vice.
- Tie in the Fireline attached to the rear hook.
- Ajust the length to 5-7 cm (2-3"). Secure it well.
- Add glue to the Fireline.
- Bring the chenille forward.
- Secure the chenille at the hook bend of the front hook.
- Tie in a hackle at the hackle tip in the rear of the front hook.
- Bring the chenille forward to just behind the bead.
- Hackle the front hook over the chenille.
- Cut off the excess hackle.
- Whipfinish behind the bead.
- Color the chenille using a blue and maybe a red waterproof pen.
- Let it dry.
I am sure that the movement and size of the fly will appeal to many fish: pike, perch, sea bass, stripers and many more, but you are the one to do the testing.





































Submitted October 5th 2008
this fly is fantastic copy of the Australian squirt worm that comes to the surface in spring to breed, the species that i use it for is the sweet tasting whiting that grow to 47cm.
they are look like bone fish, and are more spooky than them, so i know this pattern will work. does it work with weights inside the head?