RiverFish

Roach · Rutilus rutilus

Roach in the River Blackwater (Reepham)

Largest measured roach: 21 cm

The largest roach measured in Environment Agency surveys of the River Blackwater (Reepham) was 21 cm, recorded at Downstream Blackwater Bridge on 5 April 1990.

Across 46 measured roach, the median measured length was 12 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 Blackwater (Reepham).

See roach records across England →

Most recent observation24 April 2003Downstream Eades Mill · 1 fish
Largest measured roach
21 cm
Median length
12 cm
Fish measured
46
Survey locations
2

Individual EA measurements

Largest measured roach

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

LengthSurvey dateSurvey locationSurvey ID
21 cm5 Apr 1990Downstream Blackwater Bridge17140
19.9 cm5 Apr 1990Downstream Blackwater Bridge17140
18.2 cm5 Apr 1990Downstream Blackwater Bridge17140
18 cm7 Mar 1986Downstream Blackwater Bridge17138
17.4 cm18 Jun 1997Downstream Blackwater Bridge17144
17.4 cm7 Mar 1986Downstream Blackwater Bridge17138
16.5 cm18 Jun 1997Downstream Blackwater Bridge17144
16.2 cm18 Jun 1997Downstream Blackwater Bridge17144
16.2 cm5 Apr 1990Downstream Blackwater Bridge17140
15.6 cm11 May 1994Downstream Blackwater Bridge17142

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 surveyedFirst recordedLast recordedVisits finding roach
Downstream Eades Mill24 Apr 200324 Apr 20031
Downstream Blackwater Bridge7 Mar 198618 Jun 19974

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

1986–2003

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 46 measured fish were spread across different length ranges.

Smallest
4.4 cm
Lower quarter
11 cm
Median
12 cm
Upper quarter
14.6 cm
Largest
21 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Blackwater (Reepham)

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

Brown / sea trout Bullhead Stone loach Chub Minnow 3-spined stickleback

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 →