RiverFish

Bullhead · Cottus gobio

Bullhead in the Yedingham (Straightened Derwent project)

Largest measured bullhead: 5.6 cm

The largest bullhead measured in Environment Agency surveys of the Yedingham (Straightened Derwent project) was 5.6 cm, recorded at Net 4 on 18 August 2016.

Across 2 measured bullhead, the median measured length was 3.9 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Yedingham (Straightened Derwent project).

See bullhead records across England →

Most recent observation18 August 2016Net 9 · 1 fish
Largest measured bullhead
5.6 cm
Median length
3.9 cm
Fish measured
2
Survey locations
13

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
5.6 cm18 Aug 2016Net 4149683
2.2 cm18 Aug 2016Net 9149741

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
Net 918 Aug 201618 Aug 20161
Net 421 Oct 201518 Aug 20162
Net 821 Oct 201521 Oct 20151
Net 721 Oct 201521 Oct 20151
Net 621 Oct 201521 Oct 20151
Net 521 Oct 201521 Oct 20151
Net 321 Oct 201521 Oct 20151
Net 221 Oct 201521 Oct 20151
Net 1321 Oct 201521 Oct 20151
Net 1221 Oct 201521 Oct 20151
Net 1121 Oct 201521 Oct 20151
Net 1021 Oct 201521 Oct 20151
Net 121 Oct 201521 Oct 20151

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

2015–2016

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 2 measured fish were spread across different length ranges.

Smallest
2.2 cm
Lower quarter
3.1 cm
Median
3.9 cm
Upper quarter
4.8 cm
Largest
5.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Yedingham (Straightened Derwent project)

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

3-spined stickleback Dace Grayling Minnow Pike

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 →