European eel · Anguilla anguilla

European eel in the River Sapiston (Black Bourn)

Largest measured european eel: 77.9 cm

The largest european eel measured in Environment Agency surveys of the River Sapiston (Black Bourn) was 77.9 cm, recorded at Ixworth on 5 September 2012.

Across 3 measured european eel, the median measured length was 56.7 cm.

Surveyors recorded weights for 3 european eel. The median was 14.5 oz (0.41 kg) and the largest recorded weight was 2 lb 0 oz (0.908 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 Sapiston (Black Bourn).

See european eel records across England →

Most recent observation5 September 2012Ixworth · 1 fish

Largest measured european eel: 77.9 cm
Median length: 56.7 cm
Fish measured: 3
Survey locations: 11

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
77.9 cm	5 Sept 2012	Ixworth	133212
56.7 cm	14 Aug 2012	Euston	132845
49 cm	17 Aug 2009	Euston	118394

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
Ixworth	11 Jul 1988	5 Sept 2012	4
Euston	14 Jul 1988	14 Aug 2012	5
Parkhouse Farm	23 Apr 1992	26 Oct 1995	2
Sapiston Bridge	13 Jul 1988	23 Oct 1995	4
Micklemere	11 Jul 1988	18 Oct 1995	5
Bardwell Mill	12 Jul 1988	16 Oct 1995	4
Bailey Pool Bridge	21 May 1990	13 Oct 1995	3
Ixworth Mill	12 Jul 1988	12 May 1992	3
Burnthall Plantation	7 May 1992	7 May 1992	1
US Burnthall Plantation	5 May 1992	5 May 1992	1
Bullbridge	17 May 1990	17 May 1990	1

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

1988–2012

Survey records by year

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

688

689

390

091

1092

093

094

595

096

097

098

099

000

001

002

003

004

005

006

007

008

109

010

011

212

Fish measured by surveyors

Measured length distribution

See how the 3 measured fish were spread across different length ranges.

Smallest: 49 cm
Lower quarter: 52.9 cm
Median: 56.7 cm
Upper quarter: 67.3 cm
Largest: 77.9 cm

400–499 mm

500–599 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 3 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest: 12.3 oz (0.35 kg)
Lower quarter: 13.4 oz (0.38 kg)
Median: 14.5 oz (0.41 kg)
Upper quarter: 1 lb 7.2 oz (0.659 kg)
Heaviest: 2 lb 0 oz (0.908 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 Sapiston (Black Bourn)

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

Dace Roach Gudgeon Pike Chub 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 →