Stone loach · Barbatula barbatula

Stone loach in the Main River Marden

Largest measured stone loach: 8.1 cm

The largest stone loach measured in Environment Agency surveys of the Main River Marden was 8.1 cm, recorded at Stanley on 19 May 2011.

Across 6 measured stone loach, the median measured length was 7.5 cm.

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

See stone loach records across England →

Most recent observation28 July 2022Calne STW (Te)

Largest measured stone loach: 8.1 cm
Median length: 7.5 cm
Fish measured: 6
Survey locations: 5

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
8.1 cm	19 May 2011	Stanley	126400
7.7 cm	19 May 2011	Stanley	126400
7.7 cm	19 May 2011	Stanley	126400
7.4 cm	19 May 2011	Stanley	126400
5.7 cm	19 May 2011	Calne STW (Te)	126463
5.4 cm	19 May 2011	Calne STW (Te)	126463

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
Calne STW (Te)	21 May 1998	28 Jul 2022	7
Stanley	19 May 2011	19 May 2011	1
Abbey Farm	3 Sept 1998	3 Sept 1998	1
Downstream Calne	13 May 1998	13 May 1998	1
New Leaze Farm	15 Oct 1997	15 Oct 1997	1

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

1997–2022

Survey records by year

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

197

398

099

000

001

102

003

104

105

006

007

008

009

010

211

012

013

014

015

116

017

018

019

020

021

122

Fish measured by surveyors

Measured length distribution

See how the 6 measured fish were spread across different length ranges.

Smallest: 5.4 cm
Lower quarter: 6.1 cm
Median: 7.6 cm
Upper quarter: 7.7 cm
Largest: 8.1 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main River Marden

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

Bullhead Brown / sea trout Minnow Roach Gudgeon Dace

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 →