Help! Fin rot on fox face rabbit

[All Seas]

Hey guys,

Got this foxface about a month or so ago and has been doing great for weeks. He eats anything we feed him and seems to be very social. A few days ago I noticed his rear fin getting a little jagged. Now after 3-4 days its almost completely gone. What causes this? What should I do?

Right now it is him and a clown in an LPS 90 gallon tank.

Pics:

 

[TheAngelfish]

Is there anything in the tank that is bugging him (Mean fish, etc). What i would do is remove the foxface to a QT and treat it with antibiotic if possible!

 

[TheAngelfish]

What are you Parameters?
Fin rot is a bacterial infection. It's likely that several different bacteria cause similar diseases, with Flavobacterium columnare (previously known as Flexibacter) most often blamed. Aeromonas and Pseudomonas are also cited.

However it's not really right to say the bacteria cause fin rot. Almost always fin rot only occurs in weakened fish, most often because of poor tank or pond conditions. Physical damage or an attack by parasites can also leave a fish susceptible to fin rot.

Fin rot often only manifests itself in one or two fish at once and it is not particularly contagious, adding more weight to the theory that a weakened immune system is required for the disease to take hold.

 

[HumbleFish]

What are you Parameters?
Fin rot is a bacterial infection. It's likely that several different bacteria cause similar diseases, with Flavobacterium columnare (previously known as Flexibacter) most often blamed. Aeromonas and Pseudomonas are also cited.

However it's not really right to say the bacteria cause fin rot. Almost always fin rot only occurs in weakened fish, most often because of poor tank or pond conditions. Physical damage or an attack by parasites can also leave a fish susceptible to fin rot.

Fin rot often only manifests itself in one or two fish at once and it is not particularly contagious, adding more weight to the theory that a weakened immune system is required for the disease to take hold.

+1 This fish needs antibiotic treatment ASAP. But you cannot use antibiotics safely in the presence of corals/inverts, so a QT is required. Running a UV may eliminate some of the free floating bacterium, and prevent your other fish from also getting infected.