guido betsema: if i can no longer fish there, i'll have to find other areas.'d have to compete with my dutch colleagues and share a tiny fishing area. reporter: brexit puts about 50% of the dutch fishing fleet in peril, says pim visser, who represents the dutch fishing industry. he thinks this is unnecessary because strict e.u. regulations now ensure there's enough fish for all. visser thinks the british government is the real problem for distributing only a tiny fraction of its e.u. fishing quota to british small-scale fishermen in the english channel. pim visser: they blame the e.u. for the internal problems. the smaller boats have no quota. that is a problem, but that is not a problem created by brussels. that's a problem created by london. and they are they think that , they can solve a problem in london by walking away from the e.u. but that's going to be a real disappointment for them. reporter: the dutch are convinced all fishermen are responsible for north sea fish stocks. after all, fish have no nationality and recognize no borders. pim visser: what w