European eel · Anguilla anguilla

European eel in the River Blyth (Main Reaches)

Largest measured european eel: 66.5 cm

The largest european eel measured in Environment Agency surveys of the River Blyth (Main Reaches) was 66.5 cm, recorded at Mells Bridge on 13 September 2001.

Across 126 measured european eel, the median measured length was 30.1 cm.

Surveyors recorded weights for 72 european eel. The median was 2.6 oz (0.073 kg) and the largest recorded weight was 1 lb 9.4 oz (0.72 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 Blyth (Main Reaches).

See european eel records across England →

Most recent observation1 August 2016Red House Farm · 9 fish

Largest measured european eel: 66.5 cm
Median length: 30.1 cm
Fish measured: 126
Survey locations: 6

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
66.5 cm	13 Sept 2001	Mells Bridge	56090
61 cm	13 Sept 2001	Mells Bridge	56090
60 cm	14 Sept 2001	Red House Farm	55931
55 cm	7 Jun 2016	Mells Bridge	148627
51 cm	7 Jun 2016	Mells Bridge	148627
48 cm	13 Sept 2001	Mells Bridge	56090
46.5 cm	14 Sept 2001	Red House Farm	55931
46 cm	14 Sept 2001	Red House Farm	55931
45 cm	12 Sept 2001	Blyford Sluice	56570
44 cm	14 Sept 2001	Red House Farm	55931

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
Red House Farm	23 Nov 1987	1 Aug 2016	7
Mells Bridge	24 Nov 1987	7 Jun 2016	7
Blyford Sluice	12 Sept 2001	12 Sept 2001	1
Downstream Cookley Bridge	17 Nov 1987	18 May 1995	2
Downstream A144 Bridge	18 Nov 1987	17 May 1995	4
Water Mill House	22 Jul 1991	5 Aug 1994	2

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

1987–2016

Survey records by year

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

487

088

089

090

491

092

093

494

495

096

097

098

099

000

301

002

003

004

005

006

007

008

009

210

011

012

013

014

015

216

Fish measured by surveyors

Measured length distribution

See how the 126 measured fish were spread across different length ranges.

Smallest: 10.6 cm
Lower quarter: 22.8 cm
Median: 30.2 cm
Upper quarter: 36.4 cm
Largest: 66.5 cm

100–199 mm

200–299 mm

300–399 mm

400–499 mm

500–599 mm

600–699 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 72 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.4 oz (0.01 kg)
Lower quarter: 1.3 oz (0.036 kg)
Median: 2.6 oz (0.073 kg)
Upper quarter: 4.6 oz (0.129 kg)
Heaviest: 1 lb 9.4 oz (0.72 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 Blyth (Main Reaches)

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

Stone loach 3-spined stickleback Dace Roach 10-spined stickleback Rudd

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 →