Bullhead · Cottus gobio

Bullhead in the Parsons Brook

Largest measured bullhead: 8.8 cm

The largest bullhead measured in Environment Agency surveys of the Parsons Brook was 8.8 cm, recorded at Parsons Brook Q on 5 August 2004.

Across 70 measured bullhead, the median measured length was 5.9 cm.

Surveyors recorded weights for 69 bullhead. The median was 0.1 oz (0.002 kg) and the largest recorded weight was 0.4 oz (0.01 kg).

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

See bullhead records across England →

Most recent observation19 August 2025Parsons Brook Q · 1 fish

Largest measured bullhead: 8.8 cm
Median length: 5.9 cm
Fish measured: 70
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.

Length	Survey date	Survey location	Survey ID
8.8 cm	5 Aug 2004	Parsons Brook Q	80871
8.5 cm	14 Aug 2002	Parsons Brook sq	62821
8.4 cm	7 Aug 2006	Parsons Brook Q	102298
8.2 cm	8 Aug 2005	Parsons Brook Q	87405
8.1 cm	4 Jul 2003	Parsons Brook Q	76698
8.1 cm	14 Aug 2002	Parsons Brook sq	62821
8 cm	4 Jul 2003	Parsons Brook Q	76698
7.9 cm	4 Jul 2003	Parsons Brook Q	76698
7.7 cm	4 Jul 2003	Parsons Brook Q	76698
7.6 cm	4 Jul 2003	Parsons Brook Q	76698

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
Parsons Brook Q	4 Jul 2003	19 Aug 2025	6
Parsons Brook sq	14 Aug 2002	14 Aug 2002	1

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

2002–2025

Survey records by year

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

102

103

104

105

106

007

008

009

010

011

012

113

014

015

016

017

018

019

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 70 measured fish were spread across different length ranges.

Smallest: 2.9 cm
Lower quarter: 5.3 cm
Median: 5.9 cm
Upper quarter: 7.1 cm
Largest: 8.8 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 69 bullhead. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.1 oz (0.002 kg)
Median: 0.1 oz (0.002 kg)
Upper quarter: 0.1 oz (0.004 kg)
Heaviest: 0.4 oz (0.01 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Parsons Brook

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

3-spined stickleback Stone loach European eel Roach

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 →