European eel · Anguilla anguilla

European eel in the River Thet

Largest measured european eel: 70 cm

The largest european eel measured in Environment Agency surveys of the River Thet was 70 cm, recorded at Thetford on 18 October 2018.

Across 10 measured european eel, the median measured length was 49 cm.

Surveyors recorded weights for 8 european eel. The median was 9.5 oz (0.27 kg) and the largest recorded weight was 1 lb 7.1 oz (0.654 kg).

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

See european eel records across England →

Most recent observation18 September 2024Snetterton Gravel Pits · 2 fish

Largest measured european eel: 70 cm
Median length: 49 cm
Fish measured: 10
Survey locations: 8

Individual EA measurements

Largest measured european eel

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
70 cm	18 Oct 2018	Thetford	153873
62 cm	18 Sept 2024	Snetterton Gravel Pits	167124
61.8 cm	18 Oct 2018	Thetford	153873
55 cm	5 Aug 2009	Snetterton Gravel Pits	118289
51 cm	5 Aug 2009	Snetterton Gravel Pits	118289
47 cm	18 Sept 2024	Snetterton Gravel Pits	167124
42 cm	5 Aug 2009	Snetterton Gravel Pits	118289
40 cm	5 Aug 2009	Snetterton Gravel Pits	118289
38.5 cm	23 Sept 2010	Thetford	123963
24 cm	5 Aug 2009	Snetterton Gravel Pits	118289

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

Explore the river

Where european eel were found

Each point marks a survey location with at least one european eel 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 european eel
Snetterton Gravel Pits	19 Jul 1988	18 Sept 2024	4
Thetford	28 Jul 1988	18 Oct 2018	3
Thorpe Woodlands	7 Feb 1997	7 Feb 1997	1
Kilverstone Estate	29 Jul 1988	24 Nov 1995	3
Brettenham	27 Jul 1988	23 Nov 1995	3
East Harling	21 Jul 1988	21 Nov 1995	3
Bridgham Bridge	20 Jul 1988	20 Nov 1995	3
Larlingford	19 Jul 1988	16 Nov 1995	3

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

1988–2024

Survey records by year

Each bar shows how many survey visits recorded european eel that year.

788

089

090

091

092

593

094

695

096

197

098

099

000

001

002

003

004

005

006

007

008

109

110

011

012

013

014

015

016

017

118

019

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 10 measured fish were spread across different length ranges.

Smallest: 24 cm
Lower quarter: 40.5 cm
Median: 49 cm
Upper quarter: 60.1 cm
Largest: 70 cm

200–299 mm

300–399 mm

400–499 mm

500–599 mm

600–699 mm

700–799 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 8 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.5 oz (0.015 kg)
Lower quarter: 4.7 oz (0.1325 kg)
Median: 9.5 oz (0.27 kg)
Upper quarter: 12.8 oz (0.3622 kg)
Heaviest: 1 lb 7.1 oz (0.654 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Thet

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

Roach Pike Gudgeon Perch Dace Bullhead

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 →