Sick goldfish

A few days ago the new goldfish that we bought to 'fill' the pond started to get white spots on their sides, and yesterday one of them died. Closer inspection showed that some of them seemed a little lethargic and 'under the weather'. Fortunately the Koi looked healthy, but a trip to the fish shop in St Malo was necessary. The man in the shop recommended some blue 'medicine' which has been added, so fingers crossed.