RiverFish

Bullhead · Cottus gobio

Bullhead in the River Don

Largest measured bullhead: 11.5 cm

The largest bullhead measured in Environment Agency surveys of the River Don was 11.5 cm, recorded at Blonk Street, sheffield on 30 July 2011.

Across 941 measured bullhead, the median measured length was 6.5 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 Don.

See bullhead records across England →

Most recent observation12 August 2025Kilnhurst - Fry Survey · 2 fish
Largest measured bullhead
11.5 cm
Median length
6.5 cm
Fish measured
941
Survey locations
24

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
11.5 cm30 Jul 2011Blonk Street, sheffield129813
11.5 cm23 Aug 2005Wortley86417
11.4 cm23 Aug 2005Upstream Ewden Beck86418
11.3 cm23 Aug 2005Upstream Ewden Beck86418
11 cm23 Aug 2005Upstream Ewden Beck86418
11 cm23 Aug 2005Upstream Ewden Beck86418
10.7 cm23 Aug 2005Upstream Ewden Beck86418
10.6 cm23 Aug 2005Upstream Ewden Beck86418
10.6 cm16 Aug 2005Oxspring Bridge (WR)86367
10.5 cm8 Jul 2013Firth Rixon140081

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
Kilnhurst - Fry Survey15 Aug 201612 Aug 20253
Sand bed road sheffield RDRT6 Aug 20256 Aug 20251
Blackburn Meadows d/s weir DON/CO/TEMP/00125 Sept 20045 Aug 202514
Doncaster (crimpsal) DON/CO/TEMP/0035 Jul 20134 Aug 20254
Kilnhurst Bridge23 Jul 201031 Jul 20255
Wortley21 Sept 199329 Sept 20235
Upstream Ewden Beck23 Aug 200525 Sept 20234
Beeley Wood, d/s weir16 Oct 199725 Sept 20235
Effingham Street, sheffield26 Jul 201110 Sept 20235
Kelham Island Museum26 Aug 20053 Sept 20237
Livesey Street - Owlerton, Sheffield16 Sept 20112 Oct 20172
Cheesebottom STW23 Aug 200528 Sept 20173
Penistone Cricket Club21 Sept 19937 Sept 20175
Thurlstone13 Nov 19974 Sept 20174
Oughtibridge26 Aug 200511 Sept 20152
Blonk Street, sheffield30 Jul 20112 Oct 20144
Firth Rixon8 Jul 20138 Jul 20131
Nursery Street, Sheffield30 Jul 20112 Aug 20122
Kelham Island (Channel 2)15 Jul 20112 Aug 20122
Oxspring Bridge (WR)29 Sept 20007 Sept 20119
Dunford Bridge (lower site)25 Aug 201025 Aug 20101
Smithfield House, Sheffield14 Nov 199010 Oct 19972
Hillsborough6 Oct 19976 Oct 19971
Stocksbridge STW (old site)23 Sept 199323 Sept 19931

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

1990–2025

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 941 measured fish were spread across different length ranges.

Smallest
1.8 cm
Lower quarter
4.7 cm
Median
6.5 cm
Upper quarter
7.8 cm
Largest
11.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Don

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

3-spined stickleback Brown / sea trout Gudgeon Roach Minnow Perch

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 →