Almanac for 2026 · No. 10 · Autumn, October

Curamenti

A slow almanac of the fly rod

The fly box · No. 23 of 36

Prince Nymph

Nothing exactly; it suggests a dark stonefly nymph or a cased caddis and trades on contrast.

No. 23. Prince Nymph, nymph.
Kind
Nymph
Hook sizes
10–16
Season
Spring, summer, autumn
For
Trout
At the vice
A moderate tie

The dressing

Hook1X- or 2X-long heavy-wire nymph hook, barbless, sizes 10–16
ThreadBlack, 8/0
TailTwo brown goose biots, forked
BodyThree or four peacock herls twisted into a rope and wound
RibFine oval or flat gold tinsel, counter-wound
HackleBrown hen or soft cock hackle, two turns as a collar, swept back
WingTwo white goose biots tied flat over the back in a V, tips reaching the end of the body
AlsoLead-free wire underbody; a 2.4–3.3 mm gold bead is a common modern addition

Tying it

  1. Wrap lead-free wire over the middle of the shank and lock it in with thread.
  2. Tie in the two brown biots at the bend, one each side, curving away from each other.
  3. Tie in the gold tinsel and the peacock herls; twist the herls with the thread and wind a full body.
  4. Counter-wind the tinsel in four or five turns and tie off.
  5. Tie in the brown hackle, make two turns, and stroke the fibres back and down.
  6. Tie the white biots on top, flat and curving upward, splayed in a V over the body.
  7. Build a neat head, whip finish and varnish.

Fishing it

A fly for lively water and for the days after rain, when the river is carrying a tinge of colour and a subtler nymph goes unseen. Fish it dead drift along the seams and through pocket water on 4X (0.18 mm) tippet, deep enough to tick the bottom from time to time. It also takes fish on the swing as the line straightens below you, so let each drift finish and hang for a moment before lifting off. Sizes 12 and 14 cover most rivers; go larger in heavy, stony streams.

Where it comes from

The fly carries the name of Doug Prince, the Californian tier who made it popular in the middle of the twentieth century, though similar forked-tail peacock nymphs were in use before him and its earliest roots are debated. Iridescent herl, a gold rib and two white biots laid over a dark back give trout a sharp, readable target in broken water.

What it matches

See also

Beside it in the box

Patterns that do a similar job, or the next one to learn.