Fishing a local lake and roach are starting to appear looking like this:
Has anyone any experience / immediate thoughts on where the problem might lie please? ... looking for idea's while the EA get their act together.
Most roach are coming out looking OK, and other species in there (tench, bream, rudd, perch and the odd rogue carp) appear to be unaffected. Not seen any bigger fish looking like this, either.
Apart from the red markings, I'd hazard an opinion and say that the affected fish also appear to be carrying a heavier layer of slime than usual, though I could be wrong.
We're talking a smallish natural lake (rather than a commercial), no more than 4 - 5 acres, fairly shallow at maybe 4 - 5 feet max. Not heavily fished - it might see 20 anglers in a typical week!