RiverFish

Spined loach · Cobitis taenia

Spined loach in the River Ouzel

Largest measured spined loach: 10.3 cm

The largest spined loach measured in Environment Agency surveys of the River Ouzel was 10.3 cm, recorded at Manor Sports Field on 28 October 1986.

Across 19 measured spined loach, the median measured length was 9 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 spined loach records across England →

Most recent observation5 August 2025Open University · 1 fish
Largest measured spined loach
10.3 cm
Median length
9 cm
Fish measured
19
Survey locations
7

Individual EA measurements

Largest measured spined loach

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
10.3 cm28 Oct 1986Manor Sports Field29040
10.2 cm7 Sept 2015US Open University146515
9.5 cm6 Oct 2017US Open University151914
9.4 cm7 Sept 2015US Open University146515
9.3 cm6 Oct 2017US Open University151914
9.3 cm6 Oct 2017US Open University151914
9.3 cm7 Sept 2015US Open University146515
9.2 cm7 Sept 2015US Open University146515
9 cm7 Sept 2015US Open University146515
9 cm7 Sept 2015US Open University146515

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where spined loach were found

Each point marks a survey location with at least one spined 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 spined loach
Open University23 Mar 20055 Aug 20254
US Open University7 Sept 20156 Oct 20172
Caldecote Mill12 May 201012 May 20101
Castle Meadow30 Apr 200930 Apr 20091
Manor Sports Field28 Oct 198622 Mar 20054
Newport Pagnell13 Apr 200413 Apr 20041
Stoke Hammond5 Dec 19975 Dec 19971

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

1986–2025

Survey records by year

Each bar shows how many survey visits recorded spined loach that year.

Fish measured by surveyors

Measured length distribution

See how the 19 measured fish were spread across different length ranges.

Smallest
6.4 cm
Lower quarter
7.8 cm
Median
9 cm
Upper quarter
9.3 cm
Largest
10.3 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 →