Not necessary madjoni, that is some 40cm+ nose carp, such fish could be attacked by a hucho of 80cm or even less. Here is one famous picture take by late Miran Svetina, published in his book Sladkovodno ribištvo na Slovenskem. You can see a small hucho feeding with a rather big fish. the specie of the fish is not given, but judging by the tail, body shape, scales etc. is a small nose carp.
I can also give you detailes about that hucho, it was kept in captivity on Faculty for biology, University of Ljubljana, so the picture was taken in aquarium.
BlueOne