I recently purchased a 20 inch karasugoi (all black with orange belly) but i bought it as a mirror carp for only £20, not a bad deal stupid shop!! lol well he has white stuff slowly working his way up his body what is it and how can i cure it without moving it to another container??
also it hasnt eaten off of the surface since i got it so that means no koi pellets, but he is taking garden worms, sweetcorn, peas, maggots, snails and other pellets used for fishing can i get him to come up and feed from the surface??????? i mean hes not the easiest fish to see being black despite its size.

any help would be excellent
MATT