Bullhead · Cottus gobio

Bullhead in the Blake Brook

Largest measured bullhead: 10 cm

The largest bullhead measured in Environment Agency surveys of the Blake Brook was 10 cm, recorded at Bridge End on 10 September 2013.

Across 56 measured bullhead, the median measured length was 6.7 cm.

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

See bullhead records across England →

Most recent observation11 September 2025Bridge End

Largest measured bullhead: 10 cm
Median length: 6.7 cm
Fish measured: 56
Survey locations: 1

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 cm	10 Sept 2013	Bridge End	139063
9.6 cm	10 Sept 2013	Bridge End	139063
9.5 cm	10 Sept 2013	Bridge End	139063
9.5 cm	16 Apr 2010	Bridge End	121420
9.1 cm	16 Apr 2010	Bridge End	121420
9 cm	16 Apr 2010	Bridge End	121420
8.7 cm	10 Sept 2013	Bridge End	139063
8.5 cm	16 Apr 2010	Bridge End	121420
8.3 cm	16 Apr 2010	Bridge End	121420
8.1 cm	16 Apr 2010	Bridge End	121420

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
Bridge End	18 May 1994	11 Sept 2025	7

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

1994–2025

Survey records by year

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

194

095

096

097

198

099

000

001

002

003

004

105

006

007

008

009

110

011

012

113

014

015

016

017

018

119

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 56 measured fish were spread across different length ranges.

Smallest: 2.7 cm
Lower quarter: 5.1 cm
Median: 6.7 cm
Upper quarter: 7.7 cm
Largest: 10 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Blake Brook

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

Brown / sea trout Minnow Stone loach

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 →