RiverFish

Bullhead · Cottus gobio

Bullhead in the Giliwiskaw Brook

Largest measured bullhead: 10.4 cm

The largest bullhead measured in Environment Agency surveys of the Giliwiskaw Brook was 10.4 cm, recorded at Snarestone on 6 May 2014.

Across 247 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 Giliwiskaw Brook.

See bullhead records across England →

Most recent observation19 May 2026Snarestone
Largest measured bullhead
10.4 cm
Median length
5.4 cm
Fish measured
247
Survey locations
3

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
10.4 cm6 May 2014Snarestone140754
10 cm21 May 2014Stone House Farm, Packington140862
9.5 cm6 May 2014Snarestone140754
9 cm21 May 2014Stone House Farm, Packington140862
9 cm6 May 2014Snarestone140754
9 cm6 May 2014Snarestone140754
8.4 cm21 May 2014Stone House Farm, Packington140862
8.4 cm21 May 2014Stone House Farm, Packington140862
8.2 cm21 May 2014Stone House Farm, Packington140862
8.1 cm23 Apr 2019Snarestone154930

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
Snarestone29 Jan 199819 May 202610
Stone House Farm, Packington23 Jul 200923 Apr 20195
Redburrow Farm12 Mar 201312 Mar 20131

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

1998–2026

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 247 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
4.6 cm
Median
5.4 cm
Upper quarter
6.2 cm
Largest
10.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Giliwiskaw Brook

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

Chub Stone loach Dace Minnow Gudgeon Roach

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 →