Stone loach · Barbatula barbatula

Stone loach in the River Eden

Largest measured stone loach: 12.1 cm

The largest stone loach measured in Environment Agency surveys of the River Eden was 12.1 cm, recorded at Lister Avenue, Sunnyside Stream on 2 September 2009.

Across 454 measured stone loach, the median measured length was 7.9 cm.

Surveyors recorded weights for 14 stone loach. The median was 0.2 oz (0.0045 kg) and the largest recorded weight was 0.2 oz (0.007 kg).

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

See stone loach records across England →

Most recent observation28 May 2025Cernes Farm · 12 fish

Largest measured stone loach: 12.1 cm
Median length: 7.9 cm
Fish measured: 454
Survey locations: 9

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
12.1 cm	2 Sept 2009	Lister Avenue, Sunnyside Stream	118823
11.5 cm	2 Jul 2013	Old House Farm	136955
11.2 cm	2 Jul 2013	Old House Farm	136955
11 cm	2 Jul 2013	Old House Farm	136955
10.7 cm	12 Jun 2013	Haxted Mill	136380
10.7 cm	9 Sept 2004	Delaware Farm	82768
10.6 cm	25 May 2016	Long Acres	148129
10.5 cm	25 May 2016	Long Acres	148129
10.5 cm	2 Jul 2013	Old House Farm	136955
10.5 cm	12 Jun 2013	Haxted Mill	136380

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
Cernes Farm	7 Jul 2004	28 May 2025	11
Haxted Mill	8 Jun 2001	24 Jul 2019	9
u/s Vexour Bridge	6 Jul 2010	8 Jun 2016	3
Long Acres	25 May 2016	25 May 2016	1
d/s Lingfield Park Race Course	24 May 2016	24 May 2016	1
Old House Farm	2 Jul 2013	2 Jul 2013	1
u/s Bough Beech Intake	30 Jul 2002	26 Jun 2013	6
Delaware Farm	25 Apr 2002	20 Jun 2013	7
Lister Avenue, Sunnyside Stream	2 Sept 2009	2 Sept 2009	1

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

2001–2025

Survey records by year

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

101

302

103

404

205

306

207

308

309

410

011

012

613

014

015

516

017

018

219

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 454 measured fish were spread across different length ranges.

Smallest: 1.9 cm
Lower quarter: 6.9 cm
Median: 7.9 cm
Upper quarter: 9 cm
Largest: 12.1 cm

0–99 mm

425

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 14 stone loach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.002 kg)
Lower quarter: 0.1 oz (0.004 kg)
Median: 0.2 oz (0.0045 kg)
Upper quarter: 0.2 oz (0.006 kg)
Heaviest: 0.2 oz (0.007 kg)

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

More fish in this river

Explore the River Eden

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

Roach Chub Gudgeon Minnow Perch 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 →