RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Testwood & Nursling Fishery

Largest measured brown / sea trout: 50.4 cm

The largest brown / sea trout measured in Environment Agency surveys of the Testwood & Nursling Fishery was 50.4 cm, recorded at Wirehouse stream - South Arm on 13 August 2025.

Across 79 measured brown / sea trout, the median measured length was 17.6 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 brown / sea trout records across England →

Most recent observation13 August 2025Wirehouse stream - South Arm · 3 fish
Largest measured brown / sea trout
50.4 cm
Median length
17.6 cm
Fish measured
79
Survey locations
3

Individual EA measurements

Largest measured brown / sea trout

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
50.4 cm13 Aug 2025Wirehouse stream - South Arm179212
39.5 cm23 Aug 2023Wirehouse stream - South Arm163560
36.5 cm15 Oct 2018Wirehouse stream - South Arm153863
35 cm13 Aug 2025Wirehouse stream - South Arm179212
34 cm13 Aug 2025Wirehouse stream - South Arm179212
34 cm23 Aug 2023Wirehouse stream - South Arm163560
34 cm15 Oct 2018Wirehouse stream - South Arm153863
31.8 cm21 Aug 2024Wirehouse stream - North Arm166396
31 cm21 Aug 2024Wirehouse stream - South Arm166397
31 cm23 Aug 2023Wirehouse stream - South Arm163560

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

Explore the river

Where brown / sea trout were found

Each point marks a survey location with at least one brown / sea trout 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 surveyedFirst recordedLast recordedVisits finding brown / sea trout
Wirehouse stream - South Arm15 Oct 201813 Aug 20254
Wirehouse stream - North Arm15 Oct 201813 Aug 20255
Nursling Mill4 Oct 20194 Oct 20191

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 brown / sea trout that year.

Fish measured by surveyors

Measured length distribution

See how the 79 measured fish were spread across different length ranges.

Smallest
7.2 cm
Lower quarter
9.5 cm
Median
17.6 cm
Upper quarter
24.2 cm
Largest
50.4 cm

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.

European eel Brook lamprey Bullhead Atlantic salmon Flounder Chub

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 →