RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Sapiston (Black Bourn)

Largest measured stone loach: 11.2 cm

The largest stone loach measured in Environment Agency surveys of the River Sapiston (Black Bourn) was 11.2 cm, recorded at Euston on 8 November 2018.

Across 100 measured stone loach, the median measured length was 8.3 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 Sapiston (Black Bourn).

See stone loach records across England →

Most recent observation28 August 2024Euston · 3 fish
Largest measured stone loach
11.2 cm
Median length
8.3 cm
Fish measured
100
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
11.2 cm8 Nov 2018Euston154176
10.8 cm8 May 1992Bullbridge30054
10.7 cm8 Nov 2018Euston154176
10.6 cm8 Nov 2018Euston154176
10.5 cm28 Aug 2024Euston166517
10.4 cm14 Aug 2012Euston132845
10.3 cm24 Oct 2000Micklemere30791
10.3 cm24 Oct 2000Micklemere30791
10.3 cm9 Oct 1995Bullbridge30065
9.8 cm24 Oct 2000Micklemere30791

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
Euston4 Apr 198928 Aug 20246
Bailey Pool Bridge19 Apr 198922 Aug 20245
Bullbridge19 Apr 198921 Aug 20245
Micklemere23 Oct 20004 Sept 20124
Ixworth18 Aug 200918 Aug 20091
Burnthall Plantation26 Oct 199526 Oct 19951
Ixworth Mill30 Mar 198917 Oct 19952
Bardwell Mill16 Oct 199516 Oct 19951

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

1989–2024

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 100 measured fish were spread across different length ranges.

Smallest
3.3 cm
Lower quarter
7.3 cm
Median
8.3 cm
Upper quarter
8.8 cm
Largest
11.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Sapiston (Black Bourn)

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

Dace Roach Gudgeon Pike Chub 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 →