Roach · Rutilus rutilus

Roach in the Horsey Mere

Largest measured roach: 25 cm

The largest roach measured in Environment Agency surveys of the Horsey Mere was 25 cm, recorded at 77 on 4 October 1989.

Across 2,928 measured roach, 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 Horsey Mere.

See roach records across England →

Most recent observation1 September 200578 · 69 fish

Largest measured roach: 25 cm
Median length: 8.5 cm
Fish measured: 2,928
Survey locations: 11

Individual EA measurements

Largest measured roach

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

Length	Survey date	Survey location	Survey ID
25 cm	4 Oct 1989	77	16987
23.2 cm	22 Oct 1986	84	16983
20.5 cm	4 Oct 1989	77	16987
20.3 cm	5 Oct 1989	83	16988
20.3 cm	16 Oct 1986	77	16976
19.8 cm	5 Oct 1989	83	16988
19.7 cm	5 Oct 1989	83	16988
19.3 cm	17 Oct 1986	78	16977
18.9 cm	31 Aug 2005	77	85903
18.7 cm	23 Sept 1993	77	16991

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

Explore the river

Where roach were found

Each point marks a survey location with at least one roach 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 surveyed	First recorded	Last recorded	Visits finding roach
85	3 Oct 1989	1 Sept 2005	3
81	1 Sept 2005	1 Sept 2005	1
78	17 Oct 1986	1 Sept 2005	3
83	22 Oct 1986	31 Aug 2005	4
77	16 Oct 1986	31 Aug 2005	5
79	17 Oct 1986	14 Sept 1998	2
80	21 Oct 1986	4 Sept 1998	2
76	16 Oct 1986	2 Sept 1998	2
82	22 Oct 1986	25 Aug 1998	2
86	22 Oct 1986	24 Sept 1993	3
84	22 Oct 1986	22 Oct 1986	1

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

1986–2005

Survey records by year

Each bar shows how many survey visits recorded roach that year.

986

087

088

489

090

091

092

493

094

095

096

097

698

099

000

001

002

003

004

505

Fish measured by surveyors

Measured length distribution

See how the 2,928 measured fish were spread across different length ranges.

Smallest: 4.2 cm
Lower quarter: 7.8 cm
Median: 8.5 cm
Upper quarter: 11 cm
Largest: 25 cm

0–99 mm

1986

100–199 mm

937

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Horsey Mere

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

Perch Flounder 3-spined stickleback Pike Common bream Common goby

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 →