Gill infection


I need a little help identifying what this is on my angelfish.

I initially thought it was some sort of bacteria infection, so I started triple sulfa this morning, but it looks worse tonight.

Not the best pics, but hopefully good enough.



Any help would be greatly appreciated.


New member
It's hard to tell if its bacterial or fungal (it looks both white and red in your picture), but it's definitely not good! I'd start a broad spectrum antibiotic like Maracyn-2 ASAP in a hospital tank. If it's fungal, dips in Malachite green might help too.


Thanks for the reply.

The infection is actually black and fuzzy and on the gill cover. I think the white you are seeing is the exposed gills or flesh underneath.

I did another dose of triple sulfa this morning and it looks like black fuzzy stuff is turing a bit white on the ends today. If it continues to improve I'll continue the treatment for 1 week as suggested on the box.

Is there any harm in doing a maracyn-2 or furan-2 treatment after finishing the triple sulfa?