A construction-first guide to flies tied on a hollow tube rather than directly on a hook shank, with the body, leader path, junction system, replaceable hook, tube material, and exact fly pattern kept as separate decisions.
Size range
No universal size; match the exact pattern, target, tackle, prey, and regulations
Common colors
black and blue, olive, white, and blue baitfish tones, pink and orange, chartreuse, natural tones chosen for the exact named pattern
Imitates
varies by exact tube pattern
How to recognize it
A tube fly is defined by the artificial body being dressed on a hollow tube through which the leader passes. The fishing hook remains a separate component behind the body and may be held by a short junction or hook-holder tube in some systems. A feathered salmon fly, leech, Intruder-style fly, baitfish, shrimp, or saltwater fly does not become one universal pattern merely because it is built on a tube; material, target, depth, hook, tube, and rigging must remain labeled.
Representative photo · one form in this family
Common forms in this family
Large blue tube fly
The Commons source identifies this as a large blue tube fly. The photograph shows one complete feathered form and its visible tube opening; it does not establish a recipe, target species, hook system, weight, or universal tube-fly shape.
View
family comparison — complete large blue tube fly
Color shown
blue, black, turquoise, and white
Look for
The head-on macro makes the round blue tube opening and the dense black-and-blue feather body visible without a conventional hook shank running through the dressing.
Use these tips as a starting point. The river, depth, insects, and fish behavior still decide the final presentation.
01
Why it works
Separating the dressed body from the hook lets a damaged or dulled hook be replaced without discarding the entire fly, and Orvis notes that the tube can slide up the tippet during the fight.
Tube material changes depth independently of body style: lightweight plastic can preserve a higher presentation while a metal tube can add descent, so construction must be selected for the water rather than by color alone.
A short separate hook can sit behind a long moving body without requiring the whole dressing to be tied on a long hook shank, but hook position and retention still have to match the exact system and regulations.
02
When to use it
When an exact named salmon, steelhead, trout, pike, or saltwater pattern is intentionally designed for a tube and a replaceable separate hook is useful.
Choose tube material and body density for the lane: plastic for a lighter build, metal where the exact recipe and rules call for more depth, and a hook-holder or free-swinging setup only when the rig is designed for it.
Do not substitute the family label for a fishing decision. Confirm target, water, depth, prey or attractor role, body size, line density, hook, and junction system before tying or selecting the fly.
03
How to fish it
Thread the leader through the tube in the direction required by the exact design, tie on the separate hook with an appropriate terminal connection, and seat or leave it free only as that system specifies.
Set depth primarily with tube material, fly density, leader, and line rather than adding unexplained weight that changes how the body tracks or how the hook seats.
Inspect the leader path, tube ends, junction tube, hook eye, knot, and hook gap before fishing and after contact; replace damaged parts instead of assuming the dressed body makes the rig sound.
04
Mistakes to avoid
Calling every long feathered or marabou fly a tube fly when the photograph does not show or source-identify a hollow tube construction.
Treating the annotated rigging photograph as a universal standard for tube direction, hook style, junction material, or hook retention.
Copying the large blue hero's color, body size, or dense feather dressing without an exact recipe, target, depth, and tackle reason.
Make the choice
Choose the form before the color.
A family name is only a starting point. Use the waterline, construction, and observed food to narrow it to the form that fits the river.
Use the large blue tube fly to recognize one complete feathered artificial and the visible tube opening. Its source provides the family identity and color, not a recipe, target fish, hook, or weighting claim.
Use the rigged configuration to trace the leader through the body and see one separate hook seated in soft junction tubing. Keep that hook-holder system separate from free-swinging or differently retained designs.
Use the vise-adapter view to understand how a hollow tube is supported while thread and materials are attached. It is a tying setup, not a finished fly or instruction to use that exact tube length.
Choose the fishable form by exact named pattern and job—such as a light swimming marabou tube, weighted baitfish, leech profile, or other sourced design—then verify compatible tube, hook, junction, line, tackle, and regulations.
Common variations
Small changes can make a different fly.
Three verified, non-AI photographs explain the construction family from finished fly to fishing rig to tying setup: one source-identified large blue tube fly, one rigged tube body with a separate hook held by a junction tube, and one bare tube supported on a vise adapter. Only the first is a finished blue pattern; the second and third are configuration references, not additional named flies.
Large blue tube fly
A source-identified complete feathered tube fly whose blue opening, dense black-and-blue body, turquoise accents, and white markings are visible in a close macro.
Colors shown
blue, black, turquoise, white
Weighting
No hook, leader, internal tube material, or ballast is visible enough to establish weight or fishing depth.
Rigged junction-tube configuration
One documented setup with the leader through a dressed tube body and a separate short hook held at the rear by soft plastic junction tubing.
Colors shown
white, olive, blue, red, orange
Weighting
The photograph does not establish tube material, internal weight, line density, or total sink rate.
Tube on a vise adapter
A bare clear tube supported on a metal mandrel while orange thread is anchored directly to the tube.
Colors shown
clear, silver, orange, gray
Weighting
Construction reference only; tube composition, finished length, junction, body, and ballast remain unspecified.
