clownfish has weird white on fins

[fishnplants]

ive had these two clowns for a little bit about a week or so, and ive noticed one has been getting what looks like nippage on fins, the other didnt seem so aggressive to where i observed actual nippage but i assumed it was part of the proccess of who become female etc. but today i woke up and found theyre getting worse and starting to get this white rim along w them not really using one of their fins, not clamped but also not really being used. what should i do?

 

[vetteguy53081]

ive had these two clowns for a little bit about a week or so, and ive noticed one has been getting what looks like nippage on fins, the other didnt seem so aggressive to where i observed actual nippage but i assumed it was part of the proccess of who become female etc. but today i woke up and found theyre getting worse and starting to get this white rim along w them not really using one of their fins, not clamped but also not really being used. what should i do?

I answered your other thread and please refrain from cross posting as it takes away from others also seeking an answer to their concerns.
This may not be aggression but rather fin and tail rot from bacterial/water conditions.
Treat fish in quarantine with either seachem kanaplex or maracyn 2 for at least 5 days and increase oxygen during treatment with air stone.