RiverFish

Grayling · Thymallus thymallus

Grayling in the River Main Wolf

Largest measured grayling: 18.6 cm

The largest grayling measured in Environment Agency surveys of the River Main Wolf was 18.6 cm, recorded at Wolf Confluence on 1 August 2023.

Across 18 measured grayling, the median measured length was 7.8 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Main Wolf.

See grayling records across England →

Most recent observation16 September 2025Wolf Confluence · 1 fish
Largest measured grayling
18.6 cm
Median length
7.8 cm
Fish measured
18
Survey locations
2

Individual EA measurements

Largest measured grayling

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
18.6 cm1 Aug 2023Wolf Confluence163151
11.7 cm16 Sept 2025Wolf Confluence179051
9.7 cm2 Oct 2018Wolf Confluence153877
9.3 cm2 Oct 2018Wolf Confluence153877
9.1 cm20 Aug 2019Wolf Confluence155402
8.8 cm20 Aug 2019Wolf Confluence155402
8.8 cm3 Aug 2016Wolf Confluence148858
7.9 cm30 Jun 2025Cookworthy Trap177285
7.8 cm9 Jul 2024Cookworthy Trap165492
7.7 cm1 Aug 2023Wolf Confluence163151

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where grayling were found

Each point marks a survey location with at least one grayling record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyedFirst recordedLast recordedVisits finding grayling
Wolf Confluence3 Aug 201616 Sept 20255
Cookworthy Trap19 Jun 201830 Jun 20255

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

2016–2025

Survey records by year

Each bar shows how many survey visits recorded grayling that year.

Fish measured by surveyors

Measured length distribution

See how the 18 measured fish were spread across different length ranges.

Smallest
4.9 cm
Lower quarter
5.9 cm
Median
7.8 cm
Upper quarter
9 cm
Largest
18.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Wolf

Compare other species with enough survey and measurement data for a detailed page.

Brown / sea trout Bullhead Minnow European eel Atlantic salmon Stone loach

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →