Etienne Harvey
Senior Member & Supporter
As its a water without much angling presence natural baits should work well for example worms, maggots or slugs. As already mentioned you could also do a campaign of pre baiting with cheap particles such as hemp, chickpeas, maize or some cheap pigeon conditioner to draw fish into and hold in certain swims. A Google search for barbel in Slovenia states that there are many species of barbel present depending on which river system you are fishing. It also states that there are some fishing restrictions with certain rivers on how you can fish and the season for barbel runs between April through October. All rivers and lakes will be run by different angling clubs so licences and permits will be needed. Good luck with fishing and I wish you well on your barbel fishing adventures.