Callibaetis Mayflies hatch matching flies

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Callibaetis Mayflies, hatch matching patterns

Pheasant Tail Nymph Callibaetis Sparkle Dun Callibaetis Cripple
Pheasant Tail Flashback Hackle Stacker Dun Callibaetis Thorax
    More Callibaetis Info...
Callibaetis Mayfly from the book: Hatch Guide For Western Streams by Jim Schollmeyer - CLICK HERE ! Callibaetis Mayflies are delicate, beautiful creatures that inhabit many different kinds of lakes.  They are very important to fly fishers because they are prolific and available to the trout as food nearly year round. Callibaetis mayflies belong to the Baetidae family of mayflies. Most Baetidae are multi brooded. Baetidae nymphs mature exceedingly fast   
and several generations can emerge within a single season. Baetidae  nymphs are strong swimmers.  They are also very active, flitting from place to place much of the time.  This activity makes them available to trout and easy to mimic with flies. Colors of nymphs tend to shift with the color of the lake bottom, however most are brown tones.  A slim dressed Pheasant Tail Nymph is the most widely used pattern.  It can be very productive when fished near the bottom and retrieved with short, sharp strips. Hatches can start in early April on low elevation lakes and continue through October at high elevations. Normal hatch time is a two hour period mid to late morning.  Cold days can produce hatches as late as mid-afternoon.  The largest Callibaetis hatch early in the season and the smallest in the fall.  
During the spring months, gasses form between the skin of the nymph and the body of the forming adult insect inside. The wing pads and back of the nymph often turn shiny with internal gas bubbles. These bubbles gradually build and will eventually make  the nymph so buoyant that it is carried to the surface where it will hatch into a dun. For a period the buoyant nymphs will try to swim back to the bottom to hide in the vegetation.  This up and down activity can attract a lot of attention from patrolling trout.  Try fishing a Flashback Pheasant Tail or Thin Shin Nymph with a floating line, long leader prior to the suspected hatch. A strike indicator and a slow strip and pause retrieve can do the trick. 
When Callibaetis hatch, the nymph rises to the surface where it bumps into the meniscus.  Here it hangs with only the hump of the thorax breaking though the surface. Normally within seconds the thorax splits and the adult emerges. Cold or cloud cover days will slow the hatching process and usually provide the best fishing. Often during the start of the hatch the trout target floating nymphs and emerging duns.  At this stage loop wing emergers or sparkle duns can provide great success. After the dun slips out of the nymph, it rides on the surface of the water until the wings are dry enough to carry it aloft.  During later stages of the hatch, most of the mayflies that are available to the feeding trout are fully hatched.  Our favorite dry fly is the Callibaetis Loop Wing Parachute. After leaving the water, the duns fly to the shore-side vegetation where they molt and turn into the reproductive adults or spinners.  Be sure to have several Callibaetis Spinner patterns in your fly collection. 

Pheasant Tail Nymph
This is the most popular pattern for simulating Callibaetis Mayfly Nymphs.
Pheasant Tail Nymph
Item Description Size Price To Top
14906 Pheasant Tail Nymph 12 3 for $5.85
14907 Pheasant Tail Nymph 14 3 for $5.85
14908 Pheasant Tail Nymph 16 3 for $5.85
14975 Pheasant Tail Nymph 18 3 for $5.85

Pheasant Tail Nymph, Flashback
This is a very popular pattern that looks like a Callibaetis  Mayfly Nymph that is about ready to hatch.
Pheasant Tail Nymph, Flashback
Item Description Size Price To Top
13685 Pheasant Tail Nymph, Flashback 12 3 for $5.85
13686 Pheasant Tail Nymph, Flashback 14 3 for $5.85
13687 Pheasant Tail Nymph, Flashback 16 3 for $5.85

Callibaetis Sparkle Dun
As the Callibaetis Mayfly emerges the shuck will trail behind the newly emerged dun.  This pattern is a low floating dry fly with an Antron shuck.
Callibaetis Sparkle Dun
Item Description Size Price To Top
11116 Callibaetis Sparkle Dun 14 3 for $5.85
15796 Callibaetis Sparkle Dun 16 3 for $5.85

Callibaetis Hackle Stacker Sparkle Dun
This is the Callibaetis May fly as it is sliding out of or is trapped in side the nymphal shuck.
Callibaetis Hackle Stacker Sparkle Dun
Item Description Size Price To Top
MFS0048 Callibaetis Hackle Stacker Sparkle Dun 14 3 for $5.85
MFS0037 Callibaetis Hackle Stacker Sparkle Dun 16 3 for $5.85

Callibaetis Cripple
Some nymphs expire before they are able to clear their nymphal shuck. They slowly die while part below and part above the surface film. This fly can be very useful both during and after the hatch as scavenging trout glean the surface of crippled emergers.
Callibaetis Cripple
Item Description Size Price To Top
15992 Callibaetis Cripple 14 3 for $5.85
15993 Callibaetis Cripple 16 3 for $5.85

Callibaetis Thorax
This is a very productive pattern and one that is especially productive in off-color lakes or slow moving rivers.
Callibaetis Thorax
Item Description Size Price To Top
26-0100-14 Callibaetis Thorax 14 3 for $5.85
26-0100-16 Callibaetis Thorax 16 3 for $5.85

The key to success is "understanding".  You can never know enough.
Understanding the organisms that trout feed on is one of the keys to catching trout.
The Hatch Guide For Lakes by Jim Schollmeyer 
is great reference material for the trout fisher.
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