Bullhead · Cottus gobio

Bullhead in the River Duke of Northumberland

Largest measured bullhead: 10.2 cm

The largest bullhead measured in Environment Agency surveys of the River Duke of Northumberland was 10.2 cm, recorded at Riverside Walk on 25 May 2005.

Across 34 measured bullhead, the median measured length was 8.1 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 Duke of Northumberland.

See bullhead records across England →

Most recent observation10 October 2024Riverside Walk

Largest measured bullhead: 10.2 cm
Median length: 8.1 cm
Fish measured: 34
Survey locations: 5

Individual EA measurements

Largest measured bullhead

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
10.2 cm	25 May 2005	Riverside Walk	84799
10.1 cm	25 May 2005	Riverside Walk	84799
10 cm	25 May 2005	Riverside Walk	84799
9.7 cm	25 May 2005	Riverside Walk	84799
9.1 cm	25 May 2005	Riverside Walk	84799
9 cm	25 May 2005	Riverside Walk	84799
9 cm	25 May 2005	Riverside Walk	84799
8.8 cm	25 May 2005	Riverside Walk	84799
8.8 cm	25 May 2005	Riverside Walk	84799
8.5 cm	25 May 2005	Riverside Walk	84799

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 surveyed	First recorded	Last recorded	Visits finding bullhead
Riverside Walk	25 May 2005	10 Oct 2024	5
Hatton Road	6 Oct 2010	8 Oct 2024	4
Twickenham	12 Sept 2017	17 Sept 2019	3
Harlequins	6 Sept 2017	17 Sept 2019	3
Moor Lane	6 May 2010	6 May 2010	1

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

2005–2024

Survey records by year

Each bar shows how many survey visits recorded bullhead that year.

105

006

007

008

009

310

011

012

013

014

015

016

217

218

219

020

021

222

223

224

Fish measured by surveyors

Measured length distribution

See how the 34 measured fish were spread across different length ranges.

Smallest: 3 cm
Lower quarter: 7.1 cm
Median: 8.1 cm
Upper quarter: 8.7 cm
Largest: 10.2 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Duke of Northumberland

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

Chub Gudgeon Roach Minnow Stone loach European eel

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 →