Possibly a braconid wasp, it was taken from the stomach contents of a brown trout. Approx 5/6mm.
No interactions present.
Is it the structure of the wings? I wasnt sure if there were Ichneumons as small as this.
yes, there's a small areolet - the tiny cell just behind the stigma (this cell usually large in braconids), with vein 2m-cu going posteriorly from it (absent in braconids), and the large cell basal to the areolet (normally divided in two in braconids)
Lat/Lng: 54.995, -6.1349
OS grid ref: NW356745