RiverFish

Stone loach · Barbatula barbatula

Stone loach in the Roman River (Main Reaches)

Largest measured stone loach: 12.5 cm

The largest stone loach measured in Environment Agency surveys of the Roman River (Main Reaches) was 12.5 cm, recorded at Upstream Layer Mill on 7 March 1984.

Across 447 measured stone loach, the median measured length was 9.1 cm.

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

See stone loach records across England →

Most recent observation12 October 2025Bounstead FGS · 30 fish
Largest measured stone loach
12.5 cm
Median length
9.1 cm
Fish measured
447
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.

LengthSurvey dateSurvey locationSurvey ID
12.5 cm7 Mar 1984Upstream Layer Mill14675
12.3 cm7 Mar 1984Upstream Layer Mill14675
12.1 cm12 Sept 2024Bounstead FGS168775
12.1 cm6 Oct 1987Olivers Farm14681
12 cm25 Oct 2011Upstream Layer Mill128852
12 cm5 Oct 1987Upstream Layer Mill14680
11.9 cm6 Oct 1987Olivers Farm14681
11.7 cm12 Oct 2025Bounstead FGS179392
11.6 cm12 Oct 2025Bounstead FGS179392
11.4 cm16 Mar 1984Olivers Farm14676

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
Bounstead FGS6 Mar 198412 Oct 202511
Upstream Layer Mill7 Mar 198416 Oct 20174
Park Farm4 Jun 199621 Oct 20114
Olivers Farm16 Mar 198414 Nov 20057

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

1984–2025

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 447 measured fish were spread across different length ranges.

Smallest
3.7 cm
Lower quarter
7.9 cm
Median
9.1 cm
Upper quarter
9.8 cm
Largest
12.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Roman River (Main Reaches)

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

European eel Roach Dace Gudgeon Brown / sea trout 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 →