I have a 75 gallon tank with three beautiful goldfish running now for about 5yrs with no issues ,I also have an empty 20 gl. that has been set up to grow duckweed for a couple years. Well this morning I was at a big box score running an errand when I walked by their fish section and saw a tank full of baby oranda goldfish Half the fish were dead and the rest looked close behind. Well the mother in me took over and I bought the three healthiest looking ones but they still look terrible. I have them isolated in my 20 gall. duckweed tank but don't know what else to do. They are very lethargic and emancipated but I just couldn't bear to leave them in that place . Does anyone have any tips that may increase their chance of returning to good health?