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Hatches › Aquatic Worm
Hirudinea · subclass
A leech imitation is a year-round searching fly for trout in weedy lakes, ponds, and slow water.
Category
Aquatic Worm
Category
The insect or forage category for this profile.
Size
Usually about 1/2-3 in. for angler-relevant freshwater leeches; fly imitations commonly match sizes 6-14.
Size
Typical size range anglers imitate on the water.
Key stages
Egg Cocoons, Juvenile, Feeding Adult, Mature Adult, Mating Adults
Key stages
Life stages most relevant to fly fishing this hatch or forage.
Water types
lakes, ponds, sloughs, backwaters, slow streams
Water types
Water types where this bug or forage is commonly found.
Leeches are segmented annelid worms in the subclass Hirudinea, with muscular bodies and suckers at both ends. Most angler-relevant leeches are freshwater forms that live in quiet, shallow areas and move with a smooth swimming or inching motion trout readily key on.
Leech eggs are laid within protective cocoons, typically found in suitable aquatic habitats.
After hatching, juveniles emerge as small, miniature versions of adult leeches.
Young adult leeches attach to a host, such as a fish, to feed and continue their growth.
Leeches reach reproductive maturity within several months, with the timing depending on their specific species and local habitat conditions.
Upon reaching maturity, adult leeches leave their hosts to find a mate and reproduce, thus completing the cycle.
Juvenile
Charlie's Fly Box
Materials
Feeding Adult
Svenddiesel
Materials
Mature Adult
tightlinevideo
Materials
Leech
One species, multiple rivers.
