Quarantine them, 'bath' them in some necessary medication (eg oxycure or whatever it's called).
Cardinal tetras, from my few purchase experiences, are very weak fishes. They also carry dieases and will introduce some into your tank. So best to have them properly 'bath' before you release into your tank.
Most recent purchase, I forgotten all about that. Of the 50 pieces, I guess I'm down to only 10 pieces. A few other variants of tetras in my tank also died.
|