Summer Fishfly
Daily sighting probability ~10% · With luck
at Great Smoky Mountains National Park

In 3 days ~10% in a week ~30%

13 Verified sightings at Great Smoky Mountains National Park From 2019 to 2026
73 In all 4 parks
June Best month
☀️🌙 Day & Night When it's spotted

About the Summer Fishfly

Chauliodes pectinicornis known as Summer fishfly, is a species of fishfly from North America. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Congaree National Park 🇺🇸 United States
~20%
2 Acadia National Park 🇺🇸 United States
~10%
3 Shenandoah National Park 🇺🇸 United States
~10%
4 Great Smoky Mountains National Park 🇺🇸 United States
~10%

Cities Where Found

# City Country Daily sighting probability
1 Boston 🇺🇸 United States
<5%
2 New York City 🇺🇸 United States
<5%
3 Washington 🇺🇸 United States
<5%
4 Toronto 🇨🇦 Canada
<5%

Before you go

What are the chances of seeing a Summer Fishfly in Great Smoky Mountains National Park?

With luck

About 10% of wildlife watchers report a Summer Fishfly sighting in Great Smoky Mountains National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 379th most-seen of the 822 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.

When is the best time to see a Summer Fishfly in Great Smoky Mountains National Park?

March, May–June and August

In those months about 10% of wildlife watchers report a Summer Fishfly in Great Smoky Mountains National Park on a given day, against under 5% in April, July and September–February, the lowest months.

What time of day is best to see a Summer Fishfly?

Between 8 and 11 pm

Across all the parks we cover, that three-hour window holds the most Summer Fishfly sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.

Is Great Smoky Mountains National Park the best place to see a Summer Fishfly?

4th of 4

Of the 4 parks where we can rate Summer Fishfly sightings, Great Smoky Mountains National Park ranks 4th at about 10%. The best odds are in Congaree National Park (United States, about 20%), Acadia National Park (United States, about 10%) and Shenandoah National Park (United States, about 10%).

Which relatives of the Summer Fishfly live in Great Smoky Mountains National Park?

Same family: Corydalidae

The closest relatives of the Summer Fishfly that you can see in Great Smoky Mountains National Park (family Corydalidae, Dobsonflies and Fishflies) are Eastern Dobsonfly (about 20%), Saw-Combed Fishfly (about 10%) and Banded Dark Fishfly (about 10%), with each one's daily chance of a sighting.

Where does the Summer Fishfly sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Summer Fishfly is recorded against all the insects logged in Great Smoky Mountains National Park (13 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.

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