Stone loach · Barbatula barbatula

Stone loach in the River Lymn FMU

Largest measured stone loach: 15.4 cm

The largest stone loach measured in Environment Agency surveys of the River Lymn FMU was 15.4 cm, recorded at Partney Bridge on 6 October 1987.

Across 332 measured stone loach, 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 Lymn FMU.

See stone loach records across England →

Most recent observation6 June 2024Partney Bridge

Largest measured stone loach: 15.4 cm
Median length: 8.1 cm
Fish measured: 332
Survey locations: 4

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
15.4 cm	6 Oct 1987	Partney Bridge	58168
15.1 cm	6 Oct 1987	Partney Bridge	58168
14.8 cm	6 Oct 1987	Partney Bridge	58168
14.5 cm	6 Oct 1987	Partney Bridge	58168
12.5 cm	6 Oct 1987	Partney Bridge	58168
12 cm	23 Apr 2007	Partney Bridge	105202
11.7 cm	6 Oct 1987	Partney Bridge	58168
11 cm	23 Apr 2007	Partney Bridge	105202
11 cm	14 May 2003	Mill Bridge	78636
10.9 cm	23 Apr 2007	Raithby Bridge	105206

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
Partney Bridge	6 Oct 1987	6 Jun 2024	8
Raithby Bridge	6 Oct 1987	7 May 2019	6
Mill Bridge	29 Sept 1987	7 May 2019	8
Moat House Farm	2 Oct 1987	2 Apr 1996	3

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

1987–2024

Survey records by year

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

487

088

089

090

091

092

393

094

095

496

097

098

099

000

001

102

303

004

005

106

207

008

009

010

011

312

013

014

015

016

017

018

319

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 332 measured fish were spread across different length ranges.

Smallest: 4.2 cm
Lower quarter: 6.7 cm
Median: 8.1 cm
Upper quarter: 9.3 cm
Largest: 15.4 cm

0–99 mm

295

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Lymn FMU

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

Bullhead Brown / sea trout European eel 3-spined stickleback Roach Perch

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 →