mouth fungus

70 gallon community tank, same issues as last time, out of all of my fish (about 70 small tetras and barbs) only about 5 of my red eyes looks like this. they have big white patches on the top (and sometimes side) of their noses, one of which has lost the white patches but the skin turned black...

i’ve got a 70 gallon community tank and recently realized about 6 of my red eye tetras have got mouth rot, one seems somewhat severe but the others all seem new what would be the best treatment? i can’t do salt because it’s a planted tank, and ich x hasn’t helped yet. ik it’s antibiotics but...

Hello! I recently adopted a few female guppies. One of them, Cephia, is dealing with some fungus around her mouth. She is in a 1-gal hospital tank being treated with Kanaplex. Today is the 4th day. I gave the second dose yesterday. Yesterday she was looking great, back to eating, swimming...