I have noticed red streaks on my koi and goldfish's fins. The fish are eating properly and show almost no signs of sickness. Once i noticed the red streaks, I treated with BOTH Maracyn and Maracyn 2 for 5 days and the red streaks are still there. Is this septicemia or is it a water quality problem?
I haven't tested my water because I do not have my test kit right now.
I haven't tested my water because I do not have my test kit right now.