RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Chelmer

Largest measured stone loach: 12.1 cm

The largest stone loach measured in Environment Agency surveys of the River Chelmer was 12.1 cm, recorded at Camsix Farm A on 23 September 2025.

Across 494 measured stone loach, the median measured length was 8.5 cm.

Surveyors recorded weights for 2 stone loach. The median was 0.4 oz (0.011 kg) and the largest recorded weight was 0.4 oz (0.011 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 Chelmer.

See stone loach records across England →

Most recent observation1 October 2025Warners Farm · 9 fish
Largest measured stone loach
12.1 cm
Median length
8.5 cm
Fish measured
494
Survey locations
30

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.

LengthSurvey dateSurvey locationSurvey ID
12.1 cm23 Sept 2025Camsix Farm A179273
12 cm19 Aug 2013Littley Park138637
11.9 cm23 Sept 2025Camsix Farm A179273
11.7 cm23 Sept 2025Camsix Farm A179273
11.7 cm31 Jan 2005Stanbrook84205
11.6 cm22 Aug 2019Camsix Farm A156018
11.6 cm21 Sept 1983Langleys Dunmow60400
11.5 cm15 Sept 2016Camsix Farm A149433
11.5 cm31 Jan 2005Stanbrook84205
11.4 cm22 Sept 2010Camsix Farm A124011

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 surveyedFirst recordedLast recordedVisits finding stone loach
Warners Farm8 Aug 20011 Oct 20259
Camsix Farm A28 Sept 198323 Sept 202512
Upstream Croxtons10 Oct 198320 Aug 202510
Langleys Dunmow21 Sept 198319 Aug 20257
Brookend9 Jun 200325 Jun 20256
Cuton Hall12 Jul 200416 Jun 20256
Boreham Bridge (C&B Canal)5 Jul 201313 Jun 20255
Downstream Ricketts Lock25 Jun 19985 Jun 20256
A12 Bridge (C&B Canal)21 Jul 20042 Aug 20224
Downstream Paper Mills13 Jun 201328 Jun 20224
Hoe Mill Cut6 Jul 199213 Jun 20223
Barnes Mill25 Jun 200718 Jun 20195
Felstead A18 Aug 19986 Oct 20166
Little Waltham28 Jul 199821 Sept 20165
Chelmsford Viaduct24 Jul 20132 Sept 20162
Ricketts Cut25 Jun 20045 Jul 20165
Bowyers Bridge9 Feb 199821 Mar 20143
Littley Park12 Aug 199819 Aug 20136
Sugar Mills7 Jun 20137 Jun 20131
Stanbrook10 Feb 199829 Mar 20123
Absol Bridge1 Sept 198921 Sept 20106
Springfield11 Oct 198325 Aug 20105
Langley Waltham7 Aug 200120 Aug 20103
Downstream Croxtons9 Oct 199511 Aug 20103
Cuton Lock3 Nov 20043 Nov 20041
Sandford1 Nov 20041 Nov 20041
Churchend FGS19 Sept 198329 Sept 20045
Sandford Cut13 Jul 199813 Jul 19981
Ulting Church1 Jul 19981 Jul 19981
Duton Hill (River Chelmer)9 Feb 19989 Feb 19981

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

1983–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 494 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
7.2 cm
Median
8.5 cm
Upper quarter
9.3 cm
Largest
12.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 2 stone loach. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.4 oz (0.011 kg)
Lower quarter
0.4 oz (0.011 kg)
Median
0.4 oz (0.011 kg)
Upper quarter
0.4 oz (0.011 kg)
Heaviest
0.4 oz (0.011 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 Chelmer

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

Chub Roach Pike Dace Gudgeon European eel

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 →