RiverFish

Stone loach · Barbatula barbatula

Stone loach in the River Ouzel

Largest measured stone loach: 12.5 cm

The largest stone loach measured in Environment Agency surveys of the River Ouzel was 12.5 cm, recorded at Eton Bray on 24 May 2013.

Across 279 measured stone loach, the median measured length was 8.5 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 Ouzel.

See stone loach records across England →

Most recent observation8 July 2019Leighton Buzzard · 2 fish
Largest measured stone loach
12.5 cm
Median length
8.5 cm
Fish measured
279
Survey locations
14

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 cm24 May 2013Eton Bray136093
12.2 cm24 May 2013Eton Bray136093
12.1 cm24 May 2013Eton Bray136093
12 cm31 May 2016Leighton Buzzard148104
12 cm3 Jun 2013Leighton Buzzard136275
11.9 cm31 May 2016Leighton Buzzard148104
11.7 cm3 Sept 2014US Open University142564
11.6 cm18 Jun 2013US Billington136436
11.4 cm18 Jun 2013US Billington136436
11.3 cm7 Sept 2015US Open University146515

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
Leighton Buzzard30 Apr 20028 Jul 201912
US Open University3 Sept 20146 Oct 20174
Manor Sports Field9 Dec 19976 Jun 20168
Open University18 Apr 200725 May 20164
Newport Pagnell20 Jun 201320 Jun 20131
US Billington12 Apr 200718 Jun 20132
Eton Bray24 May 201324 May 20131
M1 Road Bridge4 Dec 199713 May 20103
Caldecote Mill29 Mar 199512 May 20109
Castle Meadow29 Mar 200530 Apr 20094
Simpson Ouzel3 Dec 199729 Mar 20042
Stoke Hammond5 Dec 199724 Mar 20042
Billington27 Oct 198626 Nov 19974
Cotton Valley STW9 Nov 19909 Nov 19901

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

1986–2019

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 279 measured fish were spread across different length ranges.

Smallest
4.3 cm
Lower quarter
7.2 cm
Median
8.5 cm
Upper quarter
9.9 cm
Largest
12.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ouzel

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

Gudgeon Perch Roach Dace Bullhead Minnow

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 →