Is the pattern enough to identify it, or do I need to dissect it?
No interactions present.
Who would know John? I don't! But it's a bit too late now, unless you've been breeding them!
The Internet has moved on perhaps -
Your other record is here http://www.gbif.org/species/5741657 (Llyn Helig)
and one for Padarn 1895!
From peláge alone I'm inclined to agree (but can't of course)
Lat/Lng: 53.182, -4.2354
OS grid ref: SH507673