Stone loach · Barbatula barbatula

Stone loach in the Wraysbury River

Largest measured stone loach: 8.9 cm

The largest stone loach measured in Environment Agency surveys of the Wraysbury River was 8.9 cm, recorded at Harmondsworth Moor on 24 August 2005.

Across 3 measured stone loach, the median measured length was 8 cm.

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

See stone loach records across England →

Most recent observation1 June 2023Harmondsworth Moor

Largest measured stone loach: 8.9 cm
Median length: 8 cm
Fish measured: 3
Survey locations: 3

Individual EA measurements

Largest measured stone loach

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
8.9 cm	24 Aug 2005	Harmondsworth Moor	86814
8 cm	24 Aug 2005	Harmondsworth Moor	86814
7.6 cm	24 Aug 2005	Harmondsworth Moor	86814

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where stone loach were found

Each point marks a survey location with at least one stone loach 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 stone loach
Harmondsworth Moor	3 Sept 2003	1 Jun 2023	12
Heathrow Wraysbury River Zone H	22 Oct 2019	22 Oct 2019	1
Heathrow Wraysbury River Zone F	22 Oct 2019	22 Oct 2019	1

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

2003–2023

Survey records by year

Each bar shows how many survey visits recorded stone loach that year.

103

004

105

106

107

008

109

110

111

112

113

114

115

016

017

018

219

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 3 measured fish were spread across different length ranges.

Smallest: 7.6 cm
Lower quarter: 7.8 cm
Median: 8 cm
Upper quarter: 8.5 cm
Largest: 8.9 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Wraysbury River

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

Chub Dace Gudgeon Minnow Perch Bullhead

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 →