Grayling · Thymallus thymallus

Grayling in the Tadnoll Brook

Largest measured grayling: 21.4 cm

The largest grayling measured in Environment Agency surveys of the Tadnoll Brook was 21.4 cm, recorded at Cider Museum on 19 October 2015.

Across 19 measured grayling, the median measured length was 11.4 cm.

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

See grayling records across England →

Most recent observation26 July 2023Broomhill eel · 1 fish

Largest measured grayling: 21.4 cm
Median length: 11.4 cm
Fish measured: 19
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.

Length	Survey date	Survey location	Survey ID
21.4 cm	19 Oct 2015	Cider Museum	147307
20.1 cm	30 Sept 2008	Broomhill eel	116378
17.5 cm	26 Jul 2023	Broomhill eel	162822
13.3 cm	4 Oct 2007	Broomhill eel	108232
13.1 cm	30 Sept 2008	Broomhill eel	116378
12 cm	13 Sept 2011	Broomhill eel	127947
11.6 cm	4 Oct 2007	Broomhill eel	108232
11.5 cm	16 Sept 2009	Broomhill eel	119325
11.4 cm	13 Sept 2011	Broomhill eel	127947
11.4 cm	16 Sept 2009	Broomhill eel	119325

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 surveyed	First recorded	Last recorded	Visits finding grayling
Broomhill eel	4 Oct 2007	26 Jul 2023	6
Cider Museum	19 Oct 2015	19 Oct 2015	1

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

2007–2023

Survey records by year

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

107

108

109

010

111

012

113

014

115

016

017

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 19 measured fish were spread across different length ranges.

Smallest: 8.5 cm
Lower quarter: 10.1 cm
Median: 11.4 cm
Upper quarter: 12.6 cm
Largest: 21.4 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Tadnoll Brook

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

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

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 →