| Locality: |
Year: from - to |
Sex: | Gear: | Frequency type: |
| Llyn Frongoch, UK Engld Wal | 1983 - 1983 | unsexed/mixed | seines | absolute number measured |
| Loch Leven, Kinross, UK Scotland | 1968 - 1968 | unsexed/mixed | trawls | absolute number measured |
| Narcea river (Banzao), Spain | 1989 - 1989 | unsexed/mixed | other | absolute number measured |
| Narcea river (Coto), Spain | 1989 - 1989 | unsexed/mixed | other | absolute number measured |
| Narcea river (Gedrez), Spain | 1989 - 1989 | unsexed/mixed | other | absolute number measured |
| Narcea river (Moal), Spain | 1989 - 1989 | unsexed/mixed | other | absolute number measured |
| Narcea river (Naviego), Spain | 1989 - 1989 | unsexed/mixed | other | absolute number measured |
| Narcea river (Tablizas), Spain | 1988 - 1989 | unsexed/mixed | other | absolute number measured |
| Narcea river (Zreizal), Spain | 1989 - 1989 | unsexed/mixed | other | absolute number measured |