Mayfly · Aquatic insect
Pale Watery
Baetis fuscatus
Size
5–8mm
Hook size
#18–16
Hatch window
Season June–OctoberPeak time 13:00–17:00
Water temperature
14° peak
9°20°
Hatches from 9°C, peaking at 14°C, tailing off by 20°C.How fish feed on it
The detail that changes the fishing: the female crawls DOWN a submerged stone or post to lay, and ends up trapped in and under the film rather than lying spent on it. A high-floating spinner is simply the wrong silhouette. Fish it flush and without floatant, and the refusals stop.
Flies that imitate this
CDC Olive Emerger
Pale Watery Dun
Partridge & Yellow
F Fly
Ecology
Where you'll find this
- British IslesPresent
- IberiaPresent
- The AlpsPresent
- ScandinaviaPresent
- Continental EuropePresent
- Atlantic fringePresent
Present throughout
About the genus Baetis
Baetis is a genus of mayflies of the family Baetidae, known as the blue-winged olive to anglers. There are at least 150 described species in Baetis . They are distributed worldwide, with the most variety in North America and northern Europe.