Butterfly fish

[Reeferboy92]

Hey reefers so question I have my beautiful butterfly fish and he is a very active swimmer and not shy, he’s eating really good. So here’s the question I came home today and saw 1 spot on his tail. To let you guys know I add vita chem to the food once a day and been using polyp lab medic. Sorry if you can’t see the pictures that good I’ll get better ones tomorrow

 

[Punchanello]

My experience with angels is that they can be susceptible to bacterial infections which this might be. May need to treat.

 

[Reeferboy92]

My experience with angels is that they can be susceptible to bacterial infections which this might be. May need to treat.

What do you treat it with?

 

[Punchanello]

I'm from Australia and we don't have access to antibiotics for fish but if it is bacterial that may be the way to go if it's getting progressively worse.

This is a useful guide - https://www.reef2reef.com/threads/treatment-options-102.189658/

With my butterflies I have found that bacterial infections look pink or red. Others would be far more expert that me, but they are also susceptible to flukes. I wouldn't rule out flukes being a precursor to a secondary bacterial infection.

 

[mort]

I would take a look at lympthocystis first if only to rule it out. It is very common in butterflies especially on the fins. It looks like a white/pink mass and is formed by virus that causes the infected cells to enlarge to tens of thousands of times their normal sizes. It's not great but normally good water quality, decent food and time gets rid of it.