Septicemia?

[Jdmcfast]

I have two of my wild crosses that are showing mild redness coloring in the nose area and base of the dorsal fin. There is not really any what I would consider streaking, just red areas. Also I never saw any fungus or white spring that sometimes occurs with these symptoms. They are acting normal in every other way. I have them in a QT tank and did pp treatment yesterday and plan on doing big 60-90% WC daily along with angels plus anti biotic food. Any other suggestions? Other people dealt with this?

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[LizStreithorst]

How old are they?  I may be talking out of my hat.  I really know nothing aboout Angels, but I've seen mine develop that when they are fixing to spawn.  I freaked and treated with tetracycline when I first saw it.  It did nothing and the fish remained healthy, so now I just ignore it.

[Mugwump]

Some fish are real sensitive to ammonia and nitrates, I've only had some occasional light redness on some plats, where it's more noticeable. Lots of clean water helps take it away....were they stressed, for some reason

[BillT]

I had septicemia in a small zebrafish recirc system in the past. It looked like reddish tissue at the base of the fins and nose area. This only happened when the UV failed (there was a lot of fish in the system), making it a water quality issue. It was probably from bacteria shed by the biofilter.
I would fix the UV and do a big water change.
I never tried antibiotics due to the biofilter.

I have also seem a reddish nose area in fish that had mycobacteria (vet diagnosed by histology (microscope slides)).
There is no treatment for this.