Tail Fungus

Late last night I noticed some fungus on male albino krib tail and this morning he was dead and the fungus had spread up to almost his anal fin, this was in the span of about 10 hrs. It was thick and fuzzy any ideas?

 

anything?

 

Could have been sapronalgea but I find this highly unlikely unless the whole tank had been exposed although it could have been a complex columnaris infection, I’d need more info on the tank and possibly a picture.

 

I agree with columnaris based on the quick spread, it's a bacterial infection that resembles a fungus, kanaplex or macryn 2 can treat it. Definitely need more info, tank mates, tank size, ammonia, nitrite, nitrate, pics

 

Tank size was a temp. tank 10 gl. param. PH 6.4 ammonia 0, NO2 0, NO3 20 ppm. temp 78, no photo fish gone, tank mate is sm. about 2" angel which seems to be fine at the moment.

 

I think the best guess is columnaris, is spreads super fast and I can't think of any fungus off the top of my head that will spread anywhere near that fast. I'd order some kanaplex just in case, you'll only need the 5g for that size tank. Keep a close eye on the angel, and at the first sign of anything, start treatment. Were either of them new additions?

 

No, they have ben together along with a cory.