European eel · Anguilla anguilla

European eel in the Testwood & Nursling Fishery

Largest measured european eel: 61 cm

The largest european eel measured in Environment Agency surveys of the Testwood & Nursling Fishery was 61 cm, recorded at Nursling Mill on 20 August 2024.

Across 191 measured european eel, the median measured length was 18.7 cm.

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

See european eel records across England →

Most recent observation20 August 2025Testwood Pool - The Bay · 11 fish

Largest measured european eel: 61 cm
Median length: 18.7 cm
Fish measured: 191
Survey locations: 7

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
61 cm	20 Aug 2024	Nursling Mill	166394
53.5 cm	12 Aug 2025	Nursling Mill	179217
53 cm	30 Aug 2019	Testwood Cattle Drink	155782
51.5 cm	13 Aug 2025	Wirehouse stream - North Arm	179211
51.5 cm	21 Aug 2024	Wirehouse stream - North Arm	166396
47 cm	20 Aug 2024	Nursling Mill	166394
44.5 cm	23 Aug 2023	Wirehouse stream - North Arm	163558
43 cm	23 Aug 2023	Wirehouse stream - South Arm	163560
39.8 cm	4 Oct 2019	Ghillies Run, Testwood	155679
38.4 cm	15 Oct 2018	Wirehouse stream - North Arm	153862

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
Testwood Pool - The Bay	29 Aug 2019	20 Aug 2025	3
Wirehouse stream - South Arm	15 Oct 2018	13 Aug 2025	4
Wirehouse stream - North Arm	15 Oct 2018	13 Aug 2025	5
Nursling Mill	4 Oct 2019	12 Aug 2025	5
Testwood Pool - House Bank	23 Aug 2023	23 Aug 2023	1
Ghillies Run, Testwood	4 Oct 2019	23 Aug 2023	2
Testwood Cattle Drink	29 Aug 2019	30 Aug 2019	2

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

2018–2025

Survey records by year

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

218

619

020

021

022

523

524

425

Fish measured by surveyors

Measured length distribution

See how the 191 measured fish were spread across different length ranges.

Smallest: 7 cm
Lower quarter: 14.8 cm
Median: 18.7 cm
Upper quarter: 27.4 cm
Largest: 61 cm

0–99 mm

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.

More fish in this river

Explore the Testwood & Nursling Fishery

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

Brook lamprey Bullhead Atlantic salmon Flounder Chub Brown / sea trout

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 →