RiverFish

Bullhead · Cottus gobio

Bullhead in the River Eton College

Largest measured bullhead: 6.5 cm

The largest bullhead measured in Environment Agency surveys of the River Eton College was 6.5 cm, recorded at Eton Downstream Fry on 19 August 2009.

Across 5 measured bullhead, the median measured length was 4.2 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 Eton College.

See bullhead records across England →

Most recent observation19 August 2009Eton Downstream Fry · 4 fish
Largest measured bullhead
6.5 cm
Median length
4.2 cm
Fish measured
5
Survey locations
2

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
6.5 cm19 Aug 2009Eton Downstream Fry120699
4.2 cm20 Aug 2008Eton Downstream Fry125700
4.2 cm20 Aug 2008Eton Downstream Fry125700
4 cm20 Aug 2008Eton Upstream Fry125703
3.5 cm20 Aug 2008Eton Downstream Fry125700

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
Eton Downstream Fry8 Sept 200419 Aug 20093
Eton Upstream Fry8 Sept 200420 Aug 20082

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

2004–2009

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 5 measured fish were spread across different length ranges.

Smallest
3.5 cm
Lower quarter
4 cm
Median
4.2 cm
Upper quarter
4.2 cm
Largest
6.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Eton College

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

Roach Minnow Gudgeon Dace Chub Bleak

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 →