"i have 2 small red haeded gold fishes from 20 days one fish is a bit smaller than the other.sometimes the big one chase the smaller. the smaller one yesterday eat the food and throw it out several times. today she do not want to eat. i separate it in another bowel and put dry flakes every hour and remove the old ones but in vain. it lies in the bottom from time to time. they are in a two liter round bowel i change (1/3)of water everyday and put water i put in an open bottle for 24 hours. i use a filter for 2 hours daily. i fed them twice aday and every time i put only one dry round flake for every fish.the water is always clean and the bigger fish is good. what can i do for the smaller one? "