RiverFish

Bullhead · Cottus gobio

Bullhead in the Testwood & Nursling Fishery

Largest measured bullhead: 7.6 cm

The largest bullhead measured in Environment Agency surveys of the Testwood & Nursling Fishery was 7.6 cm, recorded at Nursling Mill on 12 August 2025.

Across 31 measured bullhead, the median measured length was 5.4 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 bullhead records across England →

Most recent observation20 August 2025Testwood Pool - The Bay · 1 fish
Largest measured bullhead
7.6 cm
Median length
5.4 cm
Fish measured
31
Survey locations
5

Individual EA measurements

Largest measured bullhead

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

LengthSurvey dateSurvey locationSurvey ID
7.6 cm12 Aug 2025Nursling Mill179217
7.3 cm12 Aug 2025Nursling Mill179217
7.2 cm12 Aug 2025Nursling Mill179217
7.1 cm13 Aug 2025Wirehouse stream - North Arm179211
6.9 cm12 Aug 2025Nursling Mill179217
6.6 cm13 Aug 2025Wirehouse stream - North Arm179211
6.6 cm13 Aug 2025Wirehouse stream - North Arm179211
6.6 cm12 Aug 2025Nursling Mill179217
6.5 cm12 Aug 2025Ghillies Run, Testwood179215
6.4 cm12 Aug 2025Nursling Mill179217

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

Explore the river

Where bullhead were found

Each point marks a survey location with at least one bullhead 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 bullhead
Testwood Pool - The Bay20 Aug 202520 Aug 20251
Wirehouse stream - South Arm15 Oct 201813 Aug 20254
Wirehouse stream - North Arm15 Oct 201813 Aug 20255
Nursling Mill4 Oct 201912 Aug 20254
Ghillies Run, Testwood4 Oct 201912 Aug 20252

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 bullhead that year.

Fish measured by surveyors

Measured length distribution

See how the 31 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
4.3 cm
Median
5.4 cm
Upper quarter
6.6 cm
Largest
7.6 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 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 →