RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Main Ottery

Largest measured stone loach: 10.9 cm

The largest stone loach measured in Environment Agency surveys of the River Main Ottery was 10.9 cm, recorded at Downstream Trengune Br on 5 July 2011.

Across 728 measured stone loach, the median measured length was 7.5 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 Main Ottery.

See stone loach records across England →

Most recent observation8 July 2026Penrose · 3 fish
Largest measured stone loach
10.9 cm
Median length
7.5 cm
Fish measured
728
Survey locations
15

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
10.9 cm5 Jul 2011Downstream Trengune Br126846
10.8 cm9 Jul 2019Downstream Trengune Br155470
10.6 cm22 Aug 2013Penrose138100
10.6 cm20 Aug 2013Hellescott138052
10.6 cm20 Aug 2013Hellescott138052
10.5 cm20 Aug 2013Hellescott138052
10.3 cm11 Aug 2023Upstream Hellescott164029
10.3 cm19 Jul 2018Penrose153825
10.3 cm20 Aug 2013Yeolm Bridge138043
10.3 cm15 Aug 2011Yeolm Bridge127458

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
Penrose31 Jul 19848 Jul 202614
Downstream Trengune Br19 Jul 200728 Jul 202514
Yeolmbridge Green2 Oct 20232 Oct 20231
High Wires1 Aug 198416 Aug 20238
Upstream Hellescott11 Aug 202311 Aug 20231
Yeolm Bridge30 Jul 198413 Oct 20218
Hellescott3 Aug 198420 Jul 20217
Otterham Mill23 Jul 199313 Jul 20212
Downstream Yeolm Bridge10 Sept 201510 Sept 20151
Penheale31 Jul 198430 Jun 201113
Trengune2 Aug 198417 Jul 20067
Werrington Park30 Jul 19841 Jul 20033
Canworthy Water2 Aug 198417 Sept 20014
Braywood Farm1 Aug 198430 Aug 19963
u/s Trengune Bridge11 Aug 199311 Aug 19931

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

1984–2026

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 728 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
6.2 cm
Median
7.5 cm
Upper quarter
8.3 cm
Largest
10.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Ottery

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

Atlantic salmon Brown / sea trout Bullhead Minnow European eel Brook lamprey

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 →