Butchers Mead
4 taxon records: Brown / sea trout, Atlantic salmon, Bullhead, Minnow
Environment Agency freshwater records
River Test
Freshwater surveys recorded 22 named fish species across 82 reviewed monitoring locations between 2001 and 2025.
Data snapshot10 August 2026Latest survey in this dataset: 2025
- Named species
- 22
- Monitoring sites
- 82
- Completed surveys
- 544
- Survey coverage
- 2001–2025
Geographic coverage
EA monitoring locations
82 of 82 locations shown
Select a point to inspect an Environment Agency monitoring location.
Positions are deliberately rounded. These are monitoring locations, not fishing access points.
Recorded diversity
Fish species recorded
Select a species to show only monitoring locations where it appears in an EA survey record.
| Species | Sites recorded | Surveys recorded | Latest observation |
|---|---|---|---|
| Salmo trutta | 79 | 290 | 9 Oct 2025 |
| Anguilla anguilla | 75 | 271 | 9 Oct 2025 |
| Cottus gobio | 69 | 306 | 9 Oct 2025 |
| Phoxinus phoxinus | 59 | 284 | 9 Oct 2025 |
| Barbatula barbatula | 52 | 223 | 9 Oct 2025 |
| Thymallus thymallus | 49 | 95 | 15 Sept 2025 |
| Salmo salar | 48 | 220 | 9 Oct 2025 |
| Lampetra planeri | 39 | 161 | 9 Oct 2025 |
| Gasterosteus aculeatus | 26 | 49 | 9 Oct 2025 |
| Esox lucius | 23 | 54 | 20 Sept 2024 |
| Gobio gobio | 14 | 31 | 8 Sept 2025 |
| Rutilus rutilus | 13 | 48 | 22 Aug 2025 |
| Leuciscus cephalus | 12 | 41 | 8 Sept 2025 |
| Perca fluviatilis | 12 | 34 | 22 Aug 2025 |
| Leuciscus leuciscus | 9 | 25 | 22 Aug 2025 |
| Oncorhynchus mykiss | 4 | 4 | 19 Jul 2018 |
| Scardinius erythrophthalmus | 3 | 4 | 15 Jul 2014 |
| Abramis brama | 2 | 2 | 18 Jul 2018 |
| Cyprinus carpio | 1 | 5 | 9 Aug 2006 |
| Pseudorasbora parva | 1 | 3 | 14 Sept 2023 |
| Pungitius pungitius | 1 | 1 | 16 Sept 2024 |
| Barbus barbus | 1 | 1 | 11 Sept 2025 |
“Recorded” means the species appears in an EA survey record. Site and survey totals show evidence coverage, not abundance.
Latest in the snapshot
Recent surveys
Kimbridge House
3 taxon records: Brook lamprey, European eel, 3-spined stickleback
Kimbridge House
3 taxon records: Atlantic salmon, Bullhead, Stone loach
Big Berm, Freelands
3 taxon records: Brown / sea trout, Bullhead, Stone loach
Reviewed identity
What these records mean
Strong additional river selected from a single clean parent with 82 spatially coherent main-river and carrier monitoring locations.
Survey methods, effort, locations and coverage vary. Monitoring coordinates are rounded and do not indicate public access. Counts are not population trends.
Read the full methodology →