Torn fins?

[yikai]

Hi. Sometimes in the morning, i will see my fishes with broken/frayed fins on their fins. But throughout the day, it will heal and by night time, most of the damage tail will heal. Next day, 100% heal already. Then few days later, same thing happen again. Anyonw know whats wrong? I dont think it is fin rot, as my water quality has recently been excellent, after my minor crash, everything has been going well. Maybe something damage it at night? I dunno. But it heals very fast and the problem resurface again

[nwyk153]

Hi. Sometimes in the morning, i will see my fishes with broken/frayed fins on their fins. But throughout the day, it will heal and by night time, most of the damage tail will heal. Next day, 100% heal already. Then few days later, same thing happen again. Anyonw know whats wrong? I dont think it is fin rot, as my water quality has recently been excellent, after my minor crash, everything has been going well. Maybe something damage it at night? I dunno. But it heals very fast and the problem resurface again

Must be a fight from other more aggressive fish in your tank. It helps a lot if you could list down all your Livestock.