Schooling Bannerfish - Split Dorsal Fin

[Xaivia]

Hello,

I have a schooling bannerfish, and it appears that it has a split dorsal fin with what looks like bone on one half and then flesh on the other. I attached some pictures. It started out with the flesh kind of stringy off the end, but now it's completely split. Is the fish ok? What do I need to do for it? It is eating very well and still very active. I appreciate in advance any help.

[Xaivia]

Do you have any ideas? Any advice is appreciated.

[Xaivia]

I'm really sorry if I'm being annoying here, but does anyone have any ideas on this? I'm pretty worried about the fish. I appreciate any help.

[Alysiak00]

is he lethargic, or spunky?
eating or not eating?
alert or oblivious to motion?

if he acts normal then he should be fine

[Xaivia]

Thanks so much for the reply. He's alert, responsive, and eating very well. Do you happen to know why this has happened to him? I want to make sure it's not some kind of fin rot or something. All that's left of his dorsal fin is a little strip of flesh where it meets the body and then just bone for the rest of it. Again I really appreciate any advice here as to why this is happening.

[Xaivia]

Does anyone know what is causing this? I really appreciate it.

[Xaivia]

Any ideas?

[Shells4]

This happened to our firefish. We believe he scraped it on a rock. It took about 3 months but the fin completely grew back. Not the same fish, but hopefully you will have the same result.

[Xaivia]

Ok thanks so much!

[scapes]

since you're having no luck in this forum, you may want to try posting this in the "fish forum" or "fish disease" forum. think you'd have better luck there