RiverFish

Bullhead · Cottus gobio

Bullhead in the River Quin

Largest measured bullhead: 9.2 cm

The largest bullhead measured in Environment Agency surveys of the River Quin was 9.2 cm, recorded at Upstream Griggs Bridge on 28 October 2021.

Across 180 measured bullhead, the median measured length was 6.3 cm.

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

See bullhead records across England →

Most recent observation30 July 2026Upstream Griggs Bridge
Largest measured bullhead
9.2 cm
Median length
6.3 cm
Fish measured
180
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
9.2 cm28 Oct 2021Upstream Griggs Bridge160893
9.1 cm28 Oct 2021Upstream Griggs Bridge160893
9 cm28 Oct 2021Upstream Griggs Bridge160893
8.9 cm28 Oct 2021Upstream Griggs Bridge160893
8.9 cm28 Oct 2021Upstream Griggs Bridge160893
8.5 cm28 Oct 2021Upstream Griggs Bridge160893
8.5 cm28 Oct 2021Upstream Griggs Bridge160893
8.5 cm28 Oct 2021Upstream Griggs Bridge160893
8.3 cm21 Oct 2008Griggs Bridge115575
8.2 cm28 Oct 2021Upstream Griggs Bridge160893

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
Upstream Griggs Bridge17 Oct 201730 Jul 20269
Griggs Bridge30 May 20065 Oct 20224
Quinbury Farm19 Sept 201314 Oct 20192

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

2006–2026

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 180 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
4.9 cm
Median
6.3 cm
Upper quarter
7.2 cm
Largest
9.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Quin

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

Brown / sea trout 3-spined stickleback Brook lamprey

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 →