mouth fungus

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...