RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Adur East Arm

Largest measured stone loach: 12.4 cm

The largest stone loach measured in Environment Agency surveys of the River Adur East Arm was 12.4 cm, recorded at Burgess Hill STW on 28 July 2004.

Across 318 measured stone loach, the median measured length was 8.3 cm.

Surveyors recorded weights for 201 stone loach. The median was 0.2 oz (0.006 kg) and the largest recorded weight was 0.6 oz (0.017 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 Adur East Arm.

See stone loach records across England →

Most recent observation7 May 2026Wortleford Bridge · 1 fish
Largest measured stone loach
12.4 cm
Median length
8.3 cm
Fish measured
318
Survey locations
8

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
12.4 cm28 Jul 2004Burgess Hill STW80841
12 cm19 Aug 2009Stairbridge Lane120775
11.9 cm28 Jul 2004Burgess Hill STW80841
11.8 cm28 Jul 2004Burgess Hill STW80841
11.8 cm28 Jul 2004Burgess Hill STW80841
11.5 cm19 Aug 2009Stairbridge Lane120775
11.5 cm18 Jul 2003Burgess Hill STW76627
11.1 cm16 Aug 2006Burgess Hill STW102309
11.1 cm18 Jul 2003Burgess Hill STW76627
11 cm28 Jul 2004Burgess Hill STW80841

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
Wortleford Bridge7 May 20267 May 20261
Burgess Hill STW8 Aug 20025 Aug 20257
Hookers Farm28 Aug 200211 Jul 20243
Stairbridge Lane28 Jul 19975 Aug 20159
U/s Twineham Footbridge24 Apr 201424 Apr 20141
Brook Lodge7 Aug 20127 Aug 20121
Downstream Wineham Bridge21 Jul 200821 Jul 20081
Vale Bridge16 Jun 199716 Jun 19971

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

1997–2026

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 318 measured fish were spread across different length ranges.

Smallest
3.9 cm
Lower quarter
7.5 cm
Median
8.3 cm
Upper quarter
9.4 cm
Largest
12.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 201 stone loach. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.1 oz (0.004 kg)
Median
0.2 oz (0.006 kg)
Upper quarter
0.3 oz (0.009 kg)
Heaviest
0.6 oz (0.017 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 Adur East Arm

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

Perch Roach Chub European eel Gudgeon Pike

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 →