I have no indisputable scientific proof either way on this contentious subject Ian...which adds me on to the same list as just about everyone else, until a very extensive, properly scientiffically controlled in depth research project is carried out. So for me, I have to rely on logic, until proven wrong.
Logic tells me that because it takes millions of years for a species to evolve...any change to that species takes a VERY long time to happen. However, such things have occasionally occurred..so it is a very outside possibility.
Apparently, on certain areas of rivers such as the Wye, Trent and Severn, barbel are still being caught in huge numbers...so if a newly developed fast track learning curve has taught barbel how to avoid being caught....why haven't the barbel in those areas learnt that lesson? Are they particularly slow learners in those areas? I might add that I still catch on the occasions when I go out...so they can't be that bright...trust me on that one mate
Apparently, anglers in SOME clear rivers are not only no longer catching any fish...they are not seeing them any more either. The traditional shallows and spawning areas, where fish were traditionally easily spotted (often in huge numbers in the spring...for as long as most local anglers can remember)...are now occasionally devoid of fish...certainly if there are fish, they are in etremely reduced numbers. Logic suggests that in that case, either the fish have learned some VERY advanced stuff...or the anglers are lying...or the fish aint there.
Fish in SOME lakes apparently have been pretty well wiped out when otters have arrived on the scene...and in fairly short order. Agreed, the fish can't run as far in that situation...but it does suggest that barbel are capable...and daft enough...to do that.
Finally, logic suggests to me that it would be an all time record bonza of a coincidence if barbel have APPARENTLY disappeared in some areas....at exactly the same time as otters turned up in that same area. And I don't have a lot of faith in coincidences.
Now...I am not saying all this just to be argumentative Crooky, or to challenge your views out of spite...nor to pick on you in any way. The fact is, I have no proof either way....all my views are based on hearsay. However, my instinct is to go with logic...backed by the experiences of a lot of top anglers. You go with the opinions of the young lady. Fair enough mate, and I can't deny that she MAY be right. At the end of the day, it would be very good news if she were right
I just can't help having this sneaky feeling that on balance, the lads are right
If you knew my missus, you would understand why Ian
Cheers, Dave.