I think when you say most of the fish you mean 3. The larger Sev its eyes have been like that since I have owned it, my fire eel one eye went white and the other went like it one month later I couldnt figure out why the only conclusion I could come to is maybe it damaged it on the wood or on something in the tank. The same for the flag tail its been like that since I got it a 2". The fire eels eyes turned white not cloudy as for the sev and flag tail they came with there eyes like that they look more scratched than cloudy.