boB,
If you have any Melafix, use it right away at the correct dosage for the size of your tank to help heal the firefish's wounds. Am currently using Melafix in our 72g from h*ll for a dwarf angel with tail wounds. On Sunday, the fish was not eating and barely moving from its hiding place. I thought for sure it was a goner, being in the 72g from h*ll, that is
Yesterday and today, it's swimming well and eating again, though the tail is still showing signs of the wounds.